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Re: Image size at focal plane of an 155f7 EDFS
William L
2.7” = 68.6mm, so vignetting won’t be a problem. The diagonal of a full frame sensor is 36mm x 24mm, or 43mm, so 36mm filters would vignette. I use 2” filters for my full frame cameras, without any problems.
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Image size at focal plane of an 155f7 EDFS
marsh.family
Hi, hoping for some insight
I am considering a new camera/filter wheel and am wondering with the 2.7" focuser whether there would be vignetting for a full frame sensor. Also, I'm wondering whether a 36mm filter would be wide enough to not vignette the light from the objective should I choose a full frame sensor. Or does one need the 2" filter. Thanks, Chris
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Re: The Crab Nebula in SHO
skester@...
Thanks all for the positive feedback!
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Re: The Seagull and the Seven Sisters.
skester@...
Love the colors on that Seagull Alex, beautiful result.
Scott
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Re: The Seagull and the Seven Sisters.
Wow, Alex. Those are striking. Karen AP
From: main@ap-ug.groups.io <main@ap-ug.groups.io>
On Behalf Of Alex
Sent: Monday, January 10, 2022 2:09 AM To: main@ap-ug.groups.io Subject: [ap-ug] The Seagull and the Seven Sisters.
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Re: The Seagull and the Seven Sisters.
Roland Christen
That is a fine image of the Seagull!
Roland
-----Original Message-----
From: Alex <groups@...> To: main@ap-ug.groups.io Sent: Mon, Jan 10, 2022 2:09 am Subject: [ap-ug] The Seagull and the Seven Sisters. After weeks of crap weather, I finally got a clear night which allowed me to finish a couple images. First off is the Seagull Nebula. https://www.astrobin.com/f3ef8x/ I also grabbed some subs of the Pleiades while waiting for the Seagull to rise high enough. https://www.astrobin.com/ucor2c/ Alex
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Re: The Seagull and the Seven Sisters.
Awesome! gorgeous image
Ray
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Re: The Seagull and the Seven Sisters.
What a great shot Alex!!! Stuart
On Mon, Jan 10, 2022 at 3:09 AM Alex <groups@...> wrote:
--
Stuart Heggie
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Re: The Seagull and the Seven Sisters.
Pete Lardizabal
Spectacular imagery Alex.
toggle quoted messageShow quoted text
😎 Pete
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The Seagull and the Seven Sisters.
Alex
After weeks of crap weather, I finally got a clear night which allowed me to finish a couple images. First off is the Seagull Nebula. https://www.astrobin.com/f3ef8x/ I also grabbed some subs of the Pleiades while waiting for the Seagull to rise high enough. https://www.astrobin.com/ucor2c/ Alex
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Re: Solar filter for 92mm Stowaway
midmoastro
https://www.astro-physics.info/tech_support/accessories/solar_acc/filter-size-chart.pdf
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Re: The Crab Nebula in SHO
That’s a beautiful image! Great detail, for sure...
Ross Elkins
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Re: My first scans of Jim's AP catalogs
Thanks again Holger
Mike
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Re: My first scans of Jim's AP catalogs
I have now uploaded the new files to the AP Catalog database site. The Jan. 1992 existed already as an identical version, but Nov. 1993 differed slightly from the former one of the same date, so that I kept both versions. The Nov. 1994 catalog appears to be released after the already existing Dec. 1994 catalog - in fact, the price list is dated to Jan. 1995, so that I simply booked it as a Jan. 1995 catalog. Holger
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OT: CCD-Guide 2022
Bernhard Hubl
Hello astrophotographers, The new CCD-Guide 2022 is available! Information about CCD-Guide including ordering possibility can be found here:
If you would like to learn more about the new features of the software, you are cordially invited to watch our free online presentation of CCD-Guide 2022 including live demonstrations of concrete application examples. Date: Saturday, 2022-01-22 at 18:30 UT in English Please send an informal email to bernhard.hubl [at] astronomie.at to register for the online presentation.
Greetings from Bernhard Hubl & CCD-Guide team
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Re: The Crab Nebula in SHO
Pete Lardizabal
Marvelous image Scott! 😎 Pete
On Jan 8, 2022, at 11:55 AM, skester@... wrote:
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Re: The Crab Nebula in SHO
We’ll done!
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Re: The Crab Nebula in SHO
That is a great shot!!! Stuart
On Sat, Jan 8, 2022 at 11:55 AM <skester@...> wrote: I took advantage of the cold, clear and stable skies last night to try my first Hubble pallet image with M1 as the target. The seeing was much better than expected, and guiding with the 1100GTO was exceptional at 0.3 arcsec for the entire run. M1 was only visible for just over 2 hours due to the trees, but at F4 it seems to have been just enough. Shot with my Quattro 300P/ASI2600MM, thanks for looking. --
Stuart Heggie
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Re: The Crab Nebula in SHO
Roland Christen
Excellent detail.
Roland
-----Original Message-----
From: skester@... To: main@ap-ug.groups.io Sent: Sat, Jan 8, 2022 10:55 am Subject: [ap-ug] The Crab Nebula in SHO I took advantage of the cold, clear and stable skies last night to try my first Hubble pallet image with M1 as the target. The seeing was much better than expected, and guiding with the 1100GTO was exceptional at 0.3 arcsec for the entire run. M1 was only visible for just over 2 hours due to the trees, but at F4 it seems to have been just enough. Shot with my Quattro 300P/ASI2600MM, thanks for looking.
https://www.astrobin.com/full/3lz1rg/0/
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The Crab Nebula in SHO
skester@...
I took advantage of the cold, clear and stable skies last night to try my first Hubble pallet image with M1 as the target. The seeing was much better than expected, and guiding with the 1100GTO was exceptional at 0.3 arcsec for the entire run. M1 was only visible for just over 2 hours due to the trees, but at F4 it seems to have been just enough. Shot with my Quattro 300P/ASI2600MM, thanks for looking.
https://www.astrobin.com/full/3lz1rg/0/
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