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Re: Argh! Updates my fanny!
Sonny Edmonds
On Thu, Dec 31, 2020 at 10:28 AM, Derek C Breit wrote:
Hi Derek! Yeah, I mentioned my Insulated Carhartt's in a post and it drew the attention of a gal in Minnesota. She was surprised someone in California would know about, let alone use, insulated bibs in California. We had a fun conversation. I'm about to break them out again for our 1-3 days of winter here in Southern California. Should hit the 2nd or 3rd week of January. It actually freezes overnight, 1 to 3 times. It's brutal! LOL! ? -- SonnyE (I suggest viewed in full screen) |
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Re: End of Year - your best image(s)?
Tks Michael...you're right about the sensitivity factor. The QE of the chip in The ST-10 is fantastic...BTW...the #2 Gemini you fixed for me is working great...Tks again Stay safe, Stu On Fri, Jan 1, 2021 at 10:10 PM Michael Herman <mherman346@...> wrote:
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Re: End of Year - your best image(s)?
Nice work Stu.? I've seen this area of the sky before, but your narrowband imaging again reminds me of how complex the universe is.?? What beautiful work you all are doing.? Thank you for brightening up this dreary New Year's sad news with your gorgeous images. It is amazing how these sensitive cameras can catch the beautiful wavelengths our eyes cannot see, even from light polluted urban areas. Stay well and productive.?? Michael On Fri, Jan 1, 2021 at 6:55 PM Brian Valente <bvalente@...> wrote:
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Re: End of Year - your best image(s)?
Yes Brian...the ST-10 is a great old dinosaur...I started with a ST8-I, then the ST-8XME and now the ST-10XME...I like it better than my QSI583 althou that's not a bad camera either... Stu On Fri, Jan 1, 2021 at 10:00 PM Stu Beaber <wd4sel@...> wrote:
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Re: End of Year - your best image(s)?
Brian...That's Ha, SII, SII...The weather closed the door on getting any OIII, so I mapped the SII to green and blue... Stu On Fri, Jan 1, 2021 at 9:55 PM Brian Valente <bvalente@...> wrote:
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Re: End of Year - your best image(s)?
Very cool Stu - is this SHO narrowband? I have all the gear you mentioned, although I gave up my ST-10XME some years back. it was a great camera that served me well On Fri, Jan 1, 2021 at 6:51 PM Stu Beaber <wd4sel@...> wrote:
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Brian? Brian Valente portfolio |
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Re: End of Year - your best image(s)?
>>>>
You’ll be all ready for 4K flying in MS Flight Simulator 2020 now. lol - yeah there are a lot of gamers and miners using them. I use it mostly for video production (queue losmandy tutorials :) ) On Fri, Jan 1, 2021 at 4:22 PM Don Holmgren <djholm@...> wrote: Wow, an RTX 3090!? I looked at that for an upgrade, but it won’t fit either my budget or my MiniITX case.? The best I can do is an RTX 3070. --
Brian? Brian Valente portfolio |
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Re: End of Year - your best image(s)?
Sonny Edmonds
On Thu, Dec 31, 2020 at 10:37 PM, Tom & Barbara Coverdale wrote:
Sonny, love your image and commentary! I too want to become an accomplished long exposure?astrophotographer but unlike you I have a total of 5 months experience. Could you elaborate on achieving "critical Polar Alignment"? It continues to allude me!! Thanks ?TomI sent you a PM, Tom. Hopefully your climb will be easier for you. ;^) I'll do whatever I can to help. ? -- SonnyE (I suggest viewed in full screen) |
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Re: End of Year - your best image(s)?
Really great Don - i'm a total sucker for M78 Like you, i hope PixInsight will continue to improve GPU support i just dropped a boatload on an rtx 3090, so gpu acceleration? is definitely welcome :)? On Fri, Jan 1, 2021 at 2:59 PM Don Holmgren <djholm@...> wrote: Here are a few that came out well I think: --
Brian? Brian Valente portfolio |
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Re: Calculating arc-seconds per pixel Question
Thanks Les, That is what I was trying to figure out. --- les@... wrote: From: "Les Niles" <les@...> To: [email protected] Subject: Re: [Losmandy_users_io] Calculating arc-seconds per pixel Question Date: Fri, 1 Jan 2021 11:39:01 -0800 Do you mean “effective focal length”? That term is used in relation to SLR cameras and lenses, to indicate the field of view relative to a full 35mm frame. For example, a 200mm telephoto lens on a camera with an APS-C sensor has a field of view of about 6.5°. To get that field of view on a full-frame 35mm sensor would require a 320mm lens, so the 200mm is referred to as a “320mm effective focal length” on an APS-C camera. But the effective FL has nothing to do with image scale; it’s just a convenience for photographers who are used to thinking in terms of the view of various lenses on 35mm cameras. For calculating image scale and other astronomical purposes, you want the actual FL.? ? -Les On Dec 31, 2020, at 11:36 PM, Tom & Barbara Coverdale <tcoverda@...> wrote:
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Re: End of Year - your best image(s)?
Sonny Edmonds
On Fri, Jan 1, 2021 at 08:41 AM, Brian Valente wrote:
Sonny wow, is this still with that atik camera of yours? They should give you an award or somethingOh yeah. It's my only main imaging camera that works. The thing I like is that it does most of the heavy lifting, color adjusting, stacking as the images come in. Great for a dolt like me. LOL! You, and Losmandy, are 100% responsible for my improvements. The mount for it's flawless operation, and your tutalidge about Polar Alignment and helping me figure out settings to make the Infiniky camera work with SharpCap. I'm still improving with both and getting my PA faster each night. Some nights I do several Polar Alignments just for fun and experience. But with my work on Polar Alignment, and building 9-12 star models (per Rene's advice), I'm achieving very nearly bullseye acquisition using Stellarium as my Planetarium program. I'm like a laser beam in focus, and I repeat something until it becomes like a muscle memory. Except it's in my brain muscle. LOL! Now, we need to see if we can get Tom up to speed. Got to see which way he is approaching the flight deck. LOL! (Color or Mono. CCD or CMOS. And first get him a good Polar Alignment. Going off Forum so I don't waste bandwidth. But You and Losmandy are the soul reason I'm improving.? The Seven year old Grand Daughter said, "WOW! What is that?" I told her it was the Flaming Star Nebula. Going to burn down 2020 tonight! ;^) LOL! ? -- SonnyE (I suggest viewed in full screen) |
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Re: Calculating arc-seconds per pixel Question
开云体育Do you mean “effective focal length”? That term is used in relation to SLR cameras and lenses, to indicate the field of view relative to a full 35mm frame. For example, a 200mm telephoto lens on a camera with an APS-C sensor has a field of view of about 6.5°. To get that field of view on a full-frame 35mm sensor would require a 320mm lens, so the 200mm is referred to as a “320mm effective focal length” on an APS-C camera. But the effective FL has nothing to do with image scale; it’s just a convenience for photographers who are used to thinking in terms of the view of various lenses on 35mm cameras. For calculating image scale and other astronomical purposes, you want the actual FL.?? -Les On Dec 31, 2020, at 11:36 PM, Tom & Barbara Coverdale <tcoverda@...> wrote:
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Re: Calculating arc-seconds per pixel Question
Probably not missing anything. But to be sure to check out the calculators at the www.astronomy.tools site. They are the best.?
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On Thu, Dec 31, 2020 at 11:35 PM, Tom & Barbara Coverdale wrote:
I found the formula for calculating this value but have a question. When using focal length, is it the actual focal length or is it the apparent focal length? I have two different cameras with different size sensors but get a very similar arcsec/pixel. What ?am I missing? ? -- Chip Louie Chief Daydreamer Imagination Hardware? ? ?Astropheric Weather Forecast - South Pasadena, CA? |
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Re: End of Year - your best image(s)?
开云体育Thanks a lot :) Yeah, it is hidden by dust, more of challenge and than it "should" be. Part of the local group, if I get it right. I am really really fascinated by these galaxies. Giant systems,? so unbelievable far away, yet so "close".... I really love the ASI294 for imaging, wonderfully easy to work
with. And the G11 gives me a stable 0.4 - 0.8" RMS nowadays.
Otherwise, most of my observing time goes to variables. Best, Magnus
Den 2021-01-01 kl. 20:07, skrev Brian
Valente:
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Re: End of Year - your best image(s)?
Magnus well done! wow, i had to look that one up, i wasn't aware of it. great job On Fri, Jan 1, 2021 at 11:03 AM Magnus Larsson <magnus@...> wrote:
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Brian? Brian Valente portfolio |
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Re: End of Year - your best image(s)?
开云体育Hi! Let me share one as well, produced in the end of 2020. This time
not wide field but instead a galaxy - IC 342. C8, with reducer and
an ASI294 MC Pro. A little more than 13 hours from suburban
Malmoe, quite a lot of light pollution (don't know Bortle value
though). Best, Magnus
Den 2021-01-01 kl. 19:21, skrev Jim
Waters:
Thanks Brian. |
Michael Herman
Chip Louie
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