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Re: Losmandy G11G and Gemini2 with SGP
I should also add that after unparking the telescope the ¡°time to pier flip¡± in SGP switched to NA. Before it was accurate.?
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Re: Losmandy G11G and Gemini2 with SGP
Hey Brian, |
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Re: Guiding - Even Derek can Do It
¿ªÔÆÌåÓýDerek, You are on to something good. Hope you can get to sleep tonight. The last time things were going good for me, before I knew it the Eastern sky was turning purple LOL...
Sent from my Galaxy Tab A
-------- Original message --------
From: Derek C Breit <breit_ideas@...>
Date: 1/6/20 9:31 PM (GMT-06:00)
Subject: [Losmandy_users_io] Guiding - Even Derek can Do It
Works Perfectly! Stars are good in a FIVE MINUTE exposure.. Total RMS was 1.3 arcseconds.. ? YEAH!.. ? Derek |
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Guiding - Even Derek can Do It
¿ªÔÆÌåÓýWorks Perfectly! Stars are good in a FIVE MINUTE exposure.. Total RMS was 1.3 arcseconds.. ? YEAH!.. ? Derek |
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Re: Thread pitch..
toggle quoted message
Show quoted text
-------- Original message --------
From: Derek C Breit <breit_ideas@...>
Date: 1/6/20 7:08 PM (GMT-06:00)
Subject: Re: [Losmandy_users_io] Thread pitch..
It¡¯s perfect here for tonight, as the wind has died.. It¡¯ll be near freezing in the AM, but I will be asleep long before that.. ? Scope is cooling as we speak.. We shall see how it goes.. :-)) ? Derek ? From: [email protected] [mailto:[email protected]]
On Behalf Of Deric Caselli ? Derek, you will get it all together, I have been following these threads because I know that my nights of trials and tribulations? will be here soon enough. I am going to start with a small fast APO and a modded DSLR Canon camera everyone says this is the best of routes to go and when you go bigger aperture the 80mm can move over to a guide scope. but one thing My backup plan is I can spend the night just viewing if al else fails. I've been Lucky down here in Florida, I've been able to get out five nights sense New Years eve.the last two nights have been crystal clear.? Clear Skies and no wind to you. ? ? ? Sent from my Galaxy Tab A ? ? ? -------- Original message -------- From: Derek C Breit <breit_ideas@...> Date: 1/6/20 11:47 AM (GMT-06:00) Subject: Re: [Losmandy_users_io] Thread pitch.. ? Hello Mark.. ? I have pretty much come to that conclusion, that it shouldn¡¯t be that hard.. One thing I am fearful of is that I am wrong and that all the people ¨C who actually have done guiding ¨C are right that the way I want to do it wont work.. ??? Yeah, forget I ever mentioned barlowing the guidescope, I wont be doing that.. Many people use an ST80 as a guidescope, and I could use the one I have, but the NightHawk is vastly superior mechanically (much better focuser and can be locked), all connection toward the camera are either threaded or compression ring w/ multiple thumbscrews, and of course two rings hold the scope, and one ring is near the camera.. If any setup is adequately rigid, this one is.. If it is still not good enough, but I am confident it will be, I can go with the ST80 or with the little and very light 60mm f/4 guidescope I already have.. ??? The real fear is that I have to switch to an OAG ¨C because I would have to replace the filter wheel and filters too, but I am trying to push that thought out of my head with exactly what you said.. ¡°It ain¡¯t that hard¡±.. If I ignore my (currently) excessive Dec Backlash / ignore guiding in Dec at all or just one direction, then it *will* be easy, as my RA guides easily and very well.. ??? The bigger problem is the $%@^&*&# Weather.. Perfectly clear last night, but 30mph winds.. I swear the weather is messing with me now.. ? Derek From: [email protected] [mailto:[email protected]]
On Behalf Of Mark Christensen ? Derek, ? Your recent post suggested you have a fear of autoguiding. You shouldn¡¯t be afraid of it. Some try to image without guiding and almost make a fetish of it. I don¡¯t recommend you do that other than with short focal length imaging optics. ? With a modest focal length like 1000 mm or less guiding is easy and doesn¡¯t require anything like a Barlow on the guider as you suggested you would need to do. In fact, at 1000mm focal length for the imaging scope, a 300mm or less guider will be fine. ? And the shorter guide scope focal length will make it easier to find guide stars. ? Why can you get away with a guider with 1/3 to ? of the focal length of the imaging scope? Because autoguider cameras and software can detect errors of the order of 1/10th to ? pixel routinely. ? Another very common mistake is to guide with an expensive, heavy, APO refractors, when a lighter weight (but still rigid) and shorter focal length instrument will work ¨C heavy expensive guidescopes are a waste of money and mass budget. But if it is what you have, and you can live with the weight, go ahead and use it. But you don¡¯t need to Barlow it. ? People often assume that everything has to be absolutely optimal and perfect in this business. That¡¯s OK if you want to set yourself up for unhappiness, esp. since 2 arc second ?long term seeing is very common (which is why planetary imaging now uses video streams and software to pluck out the best frames). I have friends who remotely image from mountains and they cry if they don¡¯t get 1 arc second or better over 10s of minutes. We who live under the air-ocean rarely get to see that. ? I got into this hobby when guiding meant the lucky astronomer had to glue their eyeball to a guide scope eyepiece and push buttons on a hand controller. And individual (film) exposures could be ? hour or more long. Try doing that on a cold winters night ¨C my jeans once froze to the ground while guiding near the zenith. Autoguiding makes that trivial and easy. And cheap compared to everything else. ? My bottom line is that there is no reason not to guide for long exposures given the availability of guide cameras and free software. And it doesn¡¯t require a high-end computer to do it. In fact, the cheaper the better since laptops are generally not built to resist dew and frost ¨C taking a high-end MAC or PC into the field is not necessary or desirable. Put the laptop in a tub and put a silicon keyboard skin on it. ? So don¡¯t be afraid of autoguiding. And like anything else, practice makes perfect. ? Regards, ? Mark Christensen |
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Re: Thread pitch..
¿ªÔÆÌåÓýIt¡¯s perfect here for tonight, as the wind has died.. It¡¯ll be near freezing in the AM, but I will be asleep long before that.. ? Scope is cooling as we speak.. We shall see how it goes.. :-)) ? Derek ? From: [email protected] [mailto:[email protected]] On Behalf Of Deric Caselli
Sent: Monday, January 06, 2020 12:54 PM To: [email protected] Subject: Re: [Losmandy_users_io] Thread pitch.. ? Derek, you will get it all together, I have been following these threads because I know that my nights of trials and tribulations? will be here soon enough. I am going to start with a small fast APO and a modded DSLR Canon camera everyone says this is the best of routes to go and when you go bigger aperture the 80mm can move over to a guide scope. but one thing My backup plan is I can spend the night just viewing if al else fails. I've been Lucky down here in Florida, I've been able to get out five nights sense New Years eve.the last two nights have been crystal clear.? Clear Skies and no wind to you. ? ? ? Sent from my Galaxy Tab A ? ? ? -------- Original message -------- From: Derek C Breit <breit_ideas@...> Date: 1/6/20 11:47 AM (GMT-06:00) Subject: Re: [Losmandy_users_io] Thread pitch.. ? Hello Mark.. ? I have pretty much come to that conclusion, that it shouldn¡¯t be that hard.. One thing I am fearful of is that I am wrong and that all the people ¨C who actually have done guiding ¨C are right that the way I want to do it wont work.. ??? Yeah, forget I ever mentioned barlowing the guidescope, I wont be doing that.. Many people use an ST80 as a guidescope, and I could use the one I have, but the NightHawk is vastly superior mechanically (much better focuser and can be locked), all connection toward the camera are either threaded or compression ring w/ multiple thumbscrews, and of course two rings hold the scope, and one ring is near the camera.. If any setup is adequately rigid, this one is.. If it is still not good enough, but I am confident it will be, I can go with the ST80 or with the little and very light 60mm f/4 guidescope I already have.. ??? The real fear is that I have to switch to an OAG ¨C because I would have to replace the filter wheel and filters too, but I am trying to push that thought out of my head with exactly what you said.. ¡°It ain¡¯t that hard¡±.. If I ignore my (currently) excessive Dec Backlash / ignore guiding in Dec at all or just one direction, then it *will* be easy, as my RA guides easily and very well.. ??? The bigger problem is the $%@^&*&# Weather.. Perfectly clear last night, but 30mph winds.. I swear the weather is messing with me now.. ? Derek From: [email protected] [mailto:[email protected]] On Behalf Of Mark Christensen ? Derek, ? Your recent post suggested you have a fear of autoguiding. You shouldn¡¯t be afraid of it. Some try to image without guiding and almost make a fetish of it. I don¡¯t recommend you do that other than with short focal length imaging optics. ? With a modest focal length like 1000 mm or less guiding is easy and doesn¡¯t require anything like a Barlow on the guider as you suggested you would need to do. In fact, at 1000mm focal length for the imaging scope, a 300mm or less guider will be fine. ? And the shorter guide scope focal length will make it easier to find guide stars. ? Why can you get away with a guider with 1/3 to ? of the focal length of the imaging scope? Because autoguider cameras and software can detect errors of the order of 1/10th to ? pixel routinely. ? Another very common mistake is to guide with an expensive, heavy, APO refractors, when a lighter weight (but still rigid) and shorter focal length instrument will work ¨C heavy expensive guidescopes are a waste of money and mass budget. But if it is what you have, and you can live with the weight, go ahead and use it. But you don¡¯t need to Barlow it. ? People often assume that everything has to be absolutely optimal and perfect in this business. That¡¯s OK if you want to set yourself up for unhappiness, esp. since 2 arc second ?long term seeing is very common (which is why planetary imaging now uses video streams and software to pluck out the best frames). I have friends who remotely image from mountains and they cry if they don¡¯t get 1 arc second or better over 10s of minutes. We who live under the air-ocean rarely get to see that. ? I got into this hobby when guiding meant the lucky astronomer had to glue their eyeball to a guide scope eyepiece and push buttons on a hand controller. And individual (film) exposures could be ? hour or more long. Try doing that on a cold winters night ¨C my jeans once froze to the ground while guiding near the zenith. Autoguiding makes that trivial and easy. And cheap compared to everything else. ? My bottom line is that there is no reason not to guide for long exposures given the availability of guide cameras and free software. And it doesn¡¯t require a high-end computer to do it. In fact, the cheaper the better since laptops are generally not built to resist dew and frost ¨C taking a high-end MAC or PC into the field is not necessary or desirable. Put the laptop in a tub and put a silicon keyboard skin on it. ? So don¡¯t be afraid of autoguiding. And like anything else, practice makes perfect. ? Regards, ? Mark Christensen |
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Re: Thread pitch..
¿ªÔÆÌåÓýDerek, you will get it all together, I have been following these threads because I know that my nights of trials and tribulations? will be here soon enough. I am going to start with a small fast APO and a modded DSLR Canon camera everyone says
this is the best of routes to go and when you go bigger aperture the 80mm can move over to a guide scope. but one thing My backup plan is I can spend the night just viewing if al else fails. I've been Lucky down here in Florida, I've been able to get out five
nights sense New Years eve.the last two nights have been crystal clear.? Clear Skies and no wind to you.
Sent from my Galaxy Tab A
-------- Original message --------
From: Derek C Breit <breit_ideas@...>
Date: 1/6/20 11:47 AM (GMT-06:00)
Subject: Re: [Losmandy_users_io] Thread pitch..
Hello Mark.. ? I have pretty much come to that conclusion, that it shouldn¡¯t be that hard.. One thing I am fearful of is that I am wrong and that all the people ¨C who actually have done guiding ¨C are right that the way I want to do it wont work.. ??? Yeah, forget I ever mentioned barlowing the guidescope, I wont be doing that.. Many people use an ST80 as a guidescope, and I could use the one I have, but the NightHawk is vastly superior mechanically (much better focuser and can be locked), all connection toward the camera are either threaded or compression ring w/ multiple thumbscrews, and of course two rings hold the scope, and one ring is near the camera.. If any setup is adequately rigid, this one is.. If it is still not good enough, but I am confident it will be, I can go with the ST80 or with the little and very light 60mm f/4 guidescope I already have.. ??? The real fear is that I have to switch to an OAG ¨C because I would have to replace the filter wheel and filters too, but I am trying to push that thought out of my head with exactly what you said.. ¡°It ain¡¯t that hard¡±.. If I ignore my (currently) excessive Dec Backlash / ignore guiding in Dec at all or just one direction, then it *will* be easy, as my RA guides easily and very well.. ??? The bigger problem is the $%@^&*&# Weather.. Perfectly clear last night, but 30mph winds.. I swear the weather is messing with me now.. ? Derek From: [email protected] [mailto:[email protected]]
On Behalf Of Mark Christensen ? Derek, ? Your recent post suggested you have a fear of autoguiding. You shouldn¡¯t be afraid of it. Some try to image without guiding and almost make a fetish of it. I don¡¯t recommend you do that other than with short focal length imaging optics. ? With a modest focal length like 1000 mm or less guiding is easy and doesn¡¯t require anything like a Barlow on the guider as you suggested you would need to do. In fact, at 1000mm focal length for the imaging scope, a 300mm or less guider will be fine. ? And the shorter guide scope focal length will make it easier to find guide stars. ? Why can you get away with a guider with 1/3 to ? of the focal length of the imaging scope? Because autoguider cameras and software can detect errors of the order of 1/10th to ? pixel routinely. ? Another very common mistake is to guide with an expensive, heavy, APO refractors, when a lighter weight (but still rigid) and shorter focal length instrument will work ¨C heavy expensive guidescopes are a waste of money and mass budget. But if it is what you have, and you can live with the weight, go ahead and use it. But you don¡¯t need to Barlow it. ? People often assume that everything has to be absolutely optimal and perfect in this business. That¡¯s OK if you want to set yourself up for unhappiness, esp. since 2 arc second ?long term seeing is very common (which is why planetary imaging now uses video streams and software to pluck out the best frames). I have friends who remotely image from mountains and they cry if they don¡¯t get 1 arc second or better over 10s of minutes. We who live under the air-ocean rarely get to see that. ? I got into this hobby when guiding meant the lucky astronomer had to glue their eyeball to a guide scope eyepiece and push buttons on a hand controller. And individual (film) exposures could be ? hour or more long. Try doing that on a cold winters night ¨C my jeans once froze to the ground while guiding near the zenith. Autoguiding makes that trivial and easy. And cheap compared to everything else. ? My bottom line is that there is no reason not to guide for long exposures given the availability of guide cameras and free software. And it doesn¡¯t require a high-end computer to do it. In fact, the cheaper the better since laptops are generally not built to resist dew and frost ¨C taking a high-end MAC or PC into the field is not necessary or desirable. Put the laptop in a tub and put a silicon keyboard skin on it. ? So don¡¯t be afraid of autoguiding. And like anything else, practice makes perfect. ? Regards, ? Mark Christensen |
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Re: Thread pitch..
¿ªÔÆÌåÓýHello Mark.. ? I have pretty much come to that conclusion, that it shouldn¡¯t be that hard.. One thing I am fearful of is that I am wrong and that all the people ¨C who actually have done guiding ¨C are right that the way I want to do it wont work.. ??? Yeah, forget I ever mentioned barlowing the guidescope, I wont be doing that.. Many people use an ST80 as a guidescope, and I could use the one I have, but the NightHawk is vastly superior mechanically (much better focuser and can be locked), all connection toward the camera are either threaded or compression ring w/ multiple thumbscrews, and of course two rings hold the scope, and one ring is near the camera.. If any setup is adequately rigid, this one is.. If it is still not good enough, but I am confident it will be, I can go with the ST80 or with the little and very light 60mm f/4 guidescope I already have.. ??? The real fear is that I have to switch to an OAG ¨C because I would have to replace the filter wheel and filters too, but I am trying to push that thought out of my head with exactly what you said.. ¡°It ain¡¯t that hard¡±.. If I ignore my (currently) excessive Dec Backlash / ignore guiding in Dec at all or just one direction, then it *will* be easy, as my RA guides easily and very well.. ??? The bigger problem is the $%@^&*&# Weather.. Perfectly clear last night, but 30mph winds.. I swear the weather is messing with me now.. ? Derek From: [email protected] [mailto:[email protected]] On Behalf Of Mark Christensen
Sent: Sunday, January 05, 2020 10:16 PM To: [email protected] Subject: Re: [Losmandy_users_io] Thread pitch.. ? Derek, ? Your recent post suggested you have a fear of autoguiding. You shouldn¡¯t be afraid of it. Some try to image without guiding and almost make a fetish of it. I don¡¯t recommend you do that other than with short focal length imaging optics. ? With a modest focal length like 1000 mm or less guiding is easy and doesn¡¯t require anything like a Barlow on the guider as you suggested you would need to do. In fact, at 1000mm focal length for the imaging scope, a 300mm or less guider will be fine. ? And the shorter guide scope focal length will make it easier to find guide stars. ? Why can you get away with a guider with 1/3 to ? of the focal length of the imaging scope? Because autoguider cameras and software can detect errors of the order of 1/10th to ? pixel routinely. ? Another very common mistake is to guide with an expensive, heavy, APO refractors, when a lighter weight (but still rigid) and shorter focal length instrument will work ¨C heavy expensive guidescopes are a waste of money and mass budget. But if it is what you have, and you can live with the weight, go ahead and use it. But you don¡¯t need to Barlow it. ? People often assume that everything has to be absolutely optimal and perfect in this business. That¡¯s OK if you want to set yourself up for unhappiness, esp. since 2 arc second ?long term seeing is very common (which is why planetary imaging now uses video streams and software to pluck out the best frames). I have friends who remotely image from mountains and they cry if they don¡¯t get 1 arc second or better over 10s of minutes. We who live under the air-ocean rarely get to see that. ? I got into this hobby when guiding meant the lucky astronomer had to glue their eyeball to a guide scope eyepiece and push buttons on a hand controller. And individual (film) exposures could be ? hour or more long. Try doing that on a cold winters night ¨C my jeans once froze to the ground while guiding near the zenith. Autoguiding makes that trivial and easy. And cheap compared to everything else. ? My bottom line is that there is no reason not to guide for long exposures given the availability of guide cameras and free software. And it doesn¡¯t require a high-end computer to do it. In fact, the cheaper the better since laptops are generally not built to resist dew and frost ¨C taking a high-end MAC or PC into the field is not necessary or desirable. Put the laptop in a tub and put a silicon keyboard skin on it. ? So don¡¯t be afraid of autoguiding. And like anything else, practice makes perfect. ? Regards, ? Mark Christensen |
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Re: G-11/Gemini2 Hand Controller Acting Weird
Thanks.? That makes sense.? It's always weird when things all work fine for a while and then suddenly, they don't.? But I suppose anything electrical is subject to spurious glitches from time-to-time.? Jim? On Mon, Jan 6, 2020 at 11:31 AM Derek C Breit <breit_ideas@...> wrote:
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Re: G-11/Gemini2 Hand Controller Acting Weird
¿ªÔÆÌåÓýTake a look at your model parameters with the hand controller and look for large numbers.. And / or if you just want it fixed, put it back in the park position, cycle the power and do a cold boot.. You will have to build a new model, but it will be ¡°fixed¡±.. My mount did similar last time I used it and it was that the model got messed up, maybe by glitch, maybe by a bad entry by me, but either way, a cold boot fixed it.. ? Derek ? From: [email protected] [mailto:[email protected]] On Behalf Of Jim Ribble
Sent: Sunday, January 05, 2020 7:58 PM To: [email protected] Subject: Re: [Losmandy_users_io] G-11/Gemini2 Hand Controller Acting Weird ? Probably a dumb question but:? Unsure what/how to do that. ? Jim ? On Sun, Jan 5, 2020 at 10:55 PM crocco1250 via Groups.Io <crocco1250=[email protected]> wrote:
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Re: Thread pitch..
¿ªÔÆÌåÓýDerek, ? Your recent post suggested you have a fear of autoguiding. You shouldn¡¯t be afraid of it. Some try to image without guiding and almost make a fetish of it. I don¡¯t recommend you do that other than with short focal length imaging optics. ? With a modest focal length like 1000 mm or less guiding is easy and doesn¡¯t require anything like a Barlow on the guider as you suggested you would need to do. In fact, at 1000mm focal length for the imaging scope, a 300mm or less guider will be fine. ? And the shorter guide scope focal length will make it easier to find guide stars. ? Why can you get away with a guider with 1/3 to ? of the focal length of the imaging scope? Because autoguider cameras and software can detect errors of the order of 1/10th to ? pixel routinely. ? Another very common mistake is to guide with an expensive, heavy, APO refractors, when a lighter weight (but still rigid) and shorter focal length instrument will work ¨C heavy expensive guidescopes are a waste of money and mass budget. But if it is what you have, and you can live with the weight, go ahead and use it. But you don¡¯t need to Barlow it. ? People often assume that everything has to be absolutely optimal and perfect in this business. That¡¯s OK if you want to set yourself up for unhappiness, esp. since 2 arc second ?long term seeing is very common (which is why planetary imaging now uses video streams and software to pluck out the best frames). I have friends who remotely image from mountains and they cry if they don¡¯t get 1 arc second or better over 10s of minutes. We who live under the air-ocean rarely get to see that. ? I got into this hobby when guiding meant the lucky astronomer had to glue their eyeball to a guide scope eyepiece and push buttons on a hand controller. And individual (film) exposures could be ? hour or more long. Try doing that on a cold winters night ¨C my jeans once froze to the ground while guiding near the zenith. Autoguiding makes that trivial and easy. And cheap compared to everything else. ? My bottom line is that there is no reason not to guide for long exposures given the availability of guide cameras and free software. And it doesn¡¯t require a high-end computer to do it. In fact, the cheaper the better since laptops are generally not built to resist dew and frost ¨C taking a high-end MAC or PC into the field is not necessary or desirable. Put the laptop in a tub and put a silicon keyboard skin on it. ? So don¡¯t be afraid of autoguiding. And like anything else, practice makes perfect. ? Regards, ? Mark Christensen |
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Re: G-11/Gemini2 Hand Controller Acting Weird
Scratch the earlier "don't know how to connect to the web server" message.? I found the walk-through on how to do it.? Thanks for your help. Jim On Sun, Jan 5, 2020 at 10:59 PM Brian Valente <bvalente@...> wrote:
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Re: G-11/Gemini2 Hand Controller Acting Weird
anything is possible, for sure when I hear that slew and other basic functions work, but gotos lock up or are unavailable, that to me generally means it thinks the target is not reachable, and that is usually a time or location issue. (could be from corrupt memory, low battery, etc.).? On Sun, Jan 5, 2020 at 7:55 PM crocco1250 via Groups.Io <crocco1250=[email protected]> wrote:
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Brian? Brian Valente portfolio |
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Re: G-11/Gemini2 Hand Controller Acting Weird
Probably a dumb question but:? Unsure what/how to do that. Jim On Sun, Jan 5, 2020 at 10:55 PM crocco1250 via Groups.Io <crocco1250=[email protected]> wrote:
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Re: G-11/Gemini2 Hand Controller Acting Weird
Brian and Jim Is it possible the list stored in memory has been corrupted?? On the web server, check the status of the stored files. Chuck On Sunday, January 5, 2020 Jim Ribble <[email protected]> wrote: The night got cold and I packed?it in, but I'll double check to see if somehow maybe a "-" sign got deleted.? Why that would change from my last session, I don't know....but? I suppose anything's possible. And I'll continue to sweet-talk it.?? On Sun, Jan 5, 2020 at 10:35 PM Brian Valente <bvalente@...> wrote:
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Re: G-11/Gemini2 Hand Controller Acting Weird
The night got cold and I packed?it in, but I'll double check to see if somehow maybe a "-" sign got deleted.? Why that would change from my last session, I don't know....but? I suppose anything's possible. And I'll continue to sweet-talk it.?? On Sun, Jan 5, 2020 at 10:35 PM Brian Valente <bvalente@...> wrote:
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Re: G-11/Gemini2 Hand Controller Acting Weird
¿ªÔÆÌåÓýIs it possible your location is off? ? Or maybe you didn¡¯t talk nicely enough to it J ? ? Brian ? From: [email protected] [mailto:[email protected]] On Behalf Of Jim Ribble ? Hi guys,? |
Fritz