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Re: Mars - 12-10-20
开云体育Jason, ? I believe I purchased it through OPT. It is a small Barlow type lens that screws directly into the camera to give me what I have found to be a desirable f/16.8 f ratio given the small pixels on the ASI290M camera that I use. ? Brian Combs ? From: [email protected] <[email protected]> On Behalf Of Jason Cousins
Sent: Tuesday, December 29, 2020 10:08 AM To: [email protected] Subject: Re: [C14EdgeHD] Mars - 12-10-20 ? Hey Guys and Gals.... ? I never thought to ask the question here but in seeing this response regarding camera usage, ill ask now... ? At our club AOSNY () we utilize a C14 and I am going to be outfitting the scope for EAA for continued public viewing.... ? What seems to be the consensus regarding the proper ZWO (or Equal) camera for Planetary views or otherwise? ? And what components seem to be working out.... ? This last email notes the use of a "vernonscope", a term that I have not heard of before... ? any help would be greatly appreciated. ? ? ? "Somewhere, Something incredible is waiting to be known" Carl Sagan..... ? |
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Re: Mars - 12-10-20
开云体育
Hey Guys and Gals....
I never thought to ask the question here but in seeing this response regarding camera usage, ill ask now...
At our club AOSNY (www.aosny.org) we utilize a C14 and I am going to be outfitting the scope for EAA for continued public viewing....
What seems to be the consensus regarding the proper ZWO (or Equal) camera for Planetary views or otherwise?
And what components seem to be working out....
This last email notes the use of a "vernonscope", a term that I have not heard of before...
any help would be greatly appreciated.
"Somewhere, Something incredible is waiting to be known" Carl Sagan.....
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Re: Mars - 12-10-20
开云体育Thanks Ken! I use a C14 with a ZWO ASI290M camera. I also have attached to the camera a 1.25X Vernonscope, which gives me an F ratio of f/16.8. ? From: [email protected] <[email protected]> On Behalf Of Ken via groups.io
Sent: Monday, December 28, 2020 2:13 PM To: [email protected] Subject: Re: [C14EdgeHD] Mars - 12-10-20 ? Outstanding! Tell us about your setup. |
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Re: C14 Edge optics?
Hi Bob I'm also intrigued how you managed to get your native f11 scope down to a f5? Unless you used a Starizona Night Owl reducer which can only be used with small sized sensors? Regards Mark
On Wednesday, 2 December 2020, 06:45:21 am AEDT, Frank A via groups.io <angelfj@...> wrote:
Bob, please explain how you reach f/5 with a C14.? The Celestron focal reducers I have used have been either 0.63 or 0.7
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Re: C14 Edge optics?
Hi Mike, ? When I collimate my C14, I start with the image well out of focus. I then use the secondary to put the shadow in the center of the image. If it already looks centered, don’t believe it! Then in stages, bring the image closer to focus. Center the secondary shadow at each stage until you reach very near focus. The image may dance a bit due to sky conditions. I have no trouble seeing the festoons on Jupiter but rarely to I see an airy disc. Getting an airy disc in a large scope is more dependent on the atmosphere. Seeing astigmatism with a star could be proven by tipping you head left or right while viewing. If the astigmatism moves, have your eyes checked. ? I sold my AP refractor after getting my C14 because the C14 blew it out of the water. Aperture is king! For imaging, I use my C14 at f5 and it covers the ST10 or ST8 perfectly. For wide field, I use a 4” refractor. ? Hope this helps, Bob |
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Re: C14 Edge optics?
Had a Meade re-tubed with the same problems so I took it back. The third set of optics are amazingly sharp. Had to really insist something was wrong but they did finally take care of it.
On Sunday, November 29, 2020, 01:21:37 PM PST, Mike Shade <[email protected]> wrote:
Thanks for the input.? I have several very good telescopes, the C14 was supposed to be just a visual poke around unit.? I have a pretty good idea and a lot of experience as to what constitutes good optics.? At this point, this is not looking good.? No Airy disk in focus (there was on the previous one that UPS destroyed), and the collimation issue is weird.? The images look soft, even at low power, they don't "snap" into focus. The dealer aligned the corrector and such before I took delivery. ? The previous destroyed scope did not have these issues, other than what looked like astigmatism.? It held collimation, it collimated (there was no shadow shift inside/outside of focus), and it snapped into focus.? Stars were tight, certainly tighter than this is.? Lunar and planetary views were pretty good.? When seeing is bad, there is a clarity on occasion, perhaps a few seconds when it calms down.? This scope is soft all the time. ? Thus far unimpressed. ? ? Mike J. Shade Mike J. Shade Photography: mshadephotography.com ? In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west.? Can it be half a year since I watched her April rising in the east?? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights ? International Dark Sky Association: ? From: [email protected]
[mailto:[email protected]] On Behalf Of Daniel Marcus
Sent: Sunday, November 29, 2020 8:01 AM To: [email protected] Subject: Re: [C14EdgeHD] C14 Edge optics? ? HI Mike our club has a C-14? as well. We were concerned about cool down and have a cat cooler, and internal fans. We just installed vent fans in the obs (have a roll off roof) and have not had a chance to see if they have helped with the cool down. I accidentally left the internal cooling fans on for 3 hours before we started trying to image Mars on a good seeing night and got more reasonable results, but still am not happy with the images. Of course, we are 42 degrees North and planets have been low in the sky. As for collimination, we tried everything- but live video still looks horrible. The airy disk is impossible to see. Finally tried a Tri-Bahtinov mask for collimination, and it seemed to help a little. Still not satisfied with the images we get. We can't even use a 2x barlow on it for planetary as the image is too difficult to focus and when we do the images come out horrible. Not totally convinced it is not a thermal or seeing issue, but not happy with the scope's performance - maybe an operator issue, but after 6 years I'm becoming more convinced it is the optics. On that note the images taken with a .8X reducer/flattener seem to come out reasonable, but fine detail on the Moon or Planets is not worth trying for. Love to hear suggestions on how to improve collimination - (note the jet stream seems to be above us most of the time and maybe more the issue) Dan Marcus ? From: [email protected] <[email protected]> on behalf of Mike
Shade <[email protected]> ? So have a question, in general.? What have folks found about the optical quality of the C14 Edge scopes?? ? I had one that had what looked like astigmatism.? The dealer tested it and it was sent back to Celestron for evaluation.? Of course UPS destroyed it during shipping.? They sent a replacement.? There seem to be some issues with collimating it correctly in that the secondary shadow flips inside/outside of focus (it is not centered in the defocused star).? It takes a lot of fudging to get it right(ish).? And it looks like collimation may wander a bit.? ? Furthermore the stars seem very soft, it doesn't "snap" into focus, it is a challenge to find where the best focus is.? Even a low power.? While seeing and tube currents can play a role (the dealer has told me that it is tube currents or seeing), I have been messing with this thing for three nights and it still hasn't improved.? It will never be? planetary scope. ? The scope is in an observatory and cools off for about two hours with the roof open before use and the seeing has been reasonable.? I suspect a lemon. ? ? ? ? ? Mike J. Shade Mike J. Shade Photography: ? In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west.? Can it be half a year since I watched her April rising in the east?? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights ? International Dark Sky Association: ? ? |
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Re: C14 Edge optics?
开云体育Thanks for the input.? I have several very good telescopes, the C14 was supposed to be just a visual poke around unit.? I have a pretty good idea and a lot of experience as to what constitutes good optics.? At this point, this is not looking good.? No Airy disk in focus (there was on the previous one that UPS destroyed), and the collimation issue is weird.? The images look soft, even at low power, they don't "snap" into focus. The dealer aligned the corrector and such before I took delivery. ? The previous destroyed scope did not have these issues, other than what looked like astigmatism.? It held collimation, it collimated (there was no shadow shift inside/outside of focus), and it snapped into focus.? Stars were tight, certainly tighter than this is.? Lunar and planetary views were pretty good.? When seeing is bad, there is a clarity on occasion, perhaps a few seconds when it calms down.? This scope is soft all the time. ? Thus far unimpressed. ? ? Mike J. Shade Mike J. Shade Photography: ? In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west.? Can it be half a year since I watched her April rising in the east?? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights ? International Dark Sky Association: ? From: [email protected]
[mailto:[email protected]] On Behalf Of Daniel Marcus
Sent: Sunday, November 29, 2020 8:01 AM To: [email protected] Subject: Re: [C14EdgeHD] C14 Edge optics? ? HI Mike our club has a C-14? as well. We were concerned about cool down and have a cat cooler, and internal fans. We just installed vent fans in the obs (have a roll off roof) and have not had a chance to see if they have helped with the cool down. I accidentally left the internal cooling fans on for 3 hours before we started trying to image Mars on a good seeing night and got more reasonable results, but still am not happy with the images. Of course, we are 42 degrees North and planets have been low in the sky. As for collimination, we tried everything- but live video still looks horrible. The airy disk is impossible to see. Finally tried a Tri-Bahtinov mask for collimination, and it seemed to help a little. Still not satisfied with the images we get. We can't even use a 2x barlow on it for planetary as the image is too difficult to focus and when we do the images come out horrible. Not totally convinced it is not a thermal or seeing issue, but not happy with the scope's performance - maybe an operator issue, but after 6 years I'm becoming more convinced it is the optics. On that note the images taken with a .8X reducer/flattener seem to come out reasonable, but fine detail on the Moon or Planets is not worth trying for. Love to hear suggestions on how to improve collimination - (note the jet stream seems to be above us most of the time and maybe more the issue) Dan Marcus ? From: [email protected] <[email protected]> on behalf of Mike
Shade <[email protected]> ? So have a question, in general.? What have folks found about the optical quality of the C14 Edge scopes?? ? I had one that had what looked like astigmatism.? The dealer tested it and it was sent back to Celestron for evaluation.? Of course UPS destroyed it during shipping.? They sent a replacement.? There seem to be some issues with collimating it correctly in that the secondary shadow flips inside/outside of focus (it is not centered in the defocused star).? It takes a lot of fudging to get it right(ish).? And it looks like collimation may wander a bit.? ? Furthermore the stars seem very soft, it doesn't "snap" into focus, it is a challenge to find where the best focus is.? Even a low power.? While seeing and tube currents can play a role (the dealer has told me that it is tube currents or seeing), I have been messing with this thing for three nights and it still hasn't improved.? It will never be? planetary scope. ? The scope is in an observatory and cools off for about two hours with the roof open before use and the seeing has been reasonable.? I suspect a lemon. ? ? ? ? ? Mike J. Shade Mike J. Shade Photography: ? In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west.? Can it be half a year since I watched her April rising in the east?? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights ? International Dark Sky Association: ? ? |
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Re: C14 Edge optics?
开云体育
HI Mike
our club has a C-14? as well. We were concerned about cool down and have a cat cooler, and internal fans. We just installed vent fans in the obs (have a roll off roof) and have not had a chance to see if they have helped with the cool down. I accidentally left
the internal cooling fans on for 3 hours before we started trying to image Mars on a good seeing night and got more reasonable results, but still am not happy with the images. Of course, we are 42 degrees North and planets have been low in the sky. As for
collimination, we tried everything- but live video still looks horrible. The airy disk is impossible to see. Finally tried a Tri-Bahtinov mask for collimination, and it seemed to help a little. Still not satisfied with the images we get. We can't even use
a 2x barlow on it for planetary as the image is too difficult to focus and when we do the images come out horrible. Not totally convinced it is not a thermal or seeing issue, but not happy with the scope's performance - maybe an operator issue, but after 6
years I'm becoming more convinced it is the optics.
On that note the images taken with a .8X reducer/flattener seem to come out reasonable, but fine detail on the Moon or Planets is not worth trying for. Love to hear suggestions on how to improve collimination - (note the jet stream seems to be above us most
of the time and maybe more the issue)
Dan Marcus
From: [email protected] <[email protected]> on behalf of Mike Shade <[email protected]>
Sent: Sunday, November 29, 2020 9:36 AM To: [email protected] <[email protected]> Subject: [C14EdgeHD] C14 Edge optics? ?
So have a question, in general.? What have folks found about the optical quality of the C14 Edge scopes?? ? I had one that had what looked like astigmatism.? The dealer tested it and it was sent back to Celestron for evaluation.? Of course UPS destroyed it during shipping.? They sent a replacement.? There seem to be some issues with collimating it correctly in that the secondary shadow flips inside/outside of focus (it is not centered in the defocused star).? It takes a lot of fudging to get it right(ish).? And it looks like collimation may wander a bit.? ? Furthermore the stars seem very soft, it doesn't "snap" into focus, it is a challenge to find where the best focus is.? Even a low power.? While seeing and tube currents can play a role (the dealer has told me that it is tube currents or seeing), I have been messing with this thing for three nights and it still hasn't improved.? It will never be? planetary scope. ? The scope is in an observatory and cools off for about two hours with the roof open before use and the seeing has been reasonable.? I suspect a lemon. ? ? ? ? ? Mike J. Shade Mike J. Shade Photography:
? In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west.? Can it be half a year since I watched her April rising in the east?? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights ? International Dark Sky Association: ? ? |
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Re: Mars from 10-1-20 to 11-27-20
开云体育This is a beautifull collection. Well done ! Christian Le 29/11/2020 à 16:23, bgcombs44 a
écrit?:
Here are the best images I was able to take between 10-1-20 to 11-27-20: |
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Re: Mars -11-14-20
开云体育Thanks Paul. I use a 1.25x Vernonscope, which screws on directly to the camera. Otherwise I use no other magnification.On Nov 29, 2020, at 2:19 AM, paul K <paulskirk53@...> wrote:
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C14 Edge optics?
开云体育So have a question, in general.? What have folks found about the optical quality of the C14 Edge scopes?? ? I had one that had what looked like astigmatism.? The dealer tested it and it was sent back to Celestron for evaluation.? Of course UPS destroyed it during shipping.? They sent a replacement.? There seem to be some issues with collimating it correctly in that the secondary shadow flips inside/outside of focus (it is not centered in the defocused star).? It takes a lot of fudging to get it right(ish).? And it looks like collimation may wander a bit.? ? Furthermore the stars seem very soft, it doesn't "snap" into focus, it is a challenge to find where the best focus is.? Even a low power.? While seeing and tube currents can play a role (the dealer has told me that it is tube currents or seeing), I have been messing with this thing for three nights and it still hasn't improved.? It will never be? planetary scope. ? The scope is in an observatory and cools off for about two hours with the roof open before use and the seeing has been reasonable.? I suspect a lemon. ? ? ? ? ? Mike J. Shade Mike J. Shade Photography: ? In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west.? Can it be half a year since I watched her April rising in the east?? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights ? International Dark Sky Association: ? ? |
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Re: Mars -11-14-20
Thank you Mike!
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On Nov 15, 2020, at 7:54 AM, StarManMike via groups.io <starmanmike1@...> wrote: |
Jason Cousins
mark sansom
Frank A