My First Successful DSO Imaging Session - Say Hello to my M 31

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jthommes United States of America
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Re: My First Successful DSO Imaging Session - Say Hello to my M 31

#41

Post by jthommes »


Well, congrats Chris on your first successful session.

I can't comment on the image though since I can't see it (Win 10 Pro PC and Firefox browser).
Jim Thommes
Jim's Astrophotography
David Levy Maksutov Newtonian, Celestron Edge 9.25, FSQ-106N Refractor (on loan), WO ZenithStar 66 APO Refractor, WO Megrez II APO, Sigma 150 mm EOS Lens
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chris_g United States of America
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Re: My First Successful DSO Imaging Session - Say Hello to my M 31

#42

Post by chris_g »


jthommes wrote: Fri Oct 15, 2021 12:58 am Well, congrats Chris on your first successful session.

I can't comment on the image though since I can't see it (Win 10 Pro PC and Firefox browser).
You aren't the first one, it's the size of the JPG that I saved it in. It's a 26MB uncompressed JPG, if you let it set, it should show up. Or try clicking the link.
Image Cam: Canon 6D (Ha mod), 600D (Stock), SVBony SV405CC
Image OTA: EvoStar ED80, WO Z73, C8-A XLT
Mount: EQ6-R Pro Pier, AZ-EQ5 Pro Pier
Guide OTA: Orion 60mm, WO 32mm, ZWO OAG, SV501P
Guide Cam: ZWO 120mm, 290mm mini
EAA OTA: Orion ST80
EAA Cam: SVBony SV705C
EP: Baader Hyperion Modular Set
Filters: L-Pro Canon EOS C, L-eNhance, L-Pro, Optolong Ha 7mm, Optolong Oiii 6.5mm, Optolong Sii 6.5mm, ES H-Beta
Session Control: Mini PC/Win11 Pro, APT 4.1, PHD2 2.6.10
Processing: PixInsight, DSS 4.2.6, Adobe PS CC, Astronomy Tools Action Set, Star Spikes Pro
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chris_g United States of America
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Re: My First Successful DSO Imaging Session - Say Hello to my M 31

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Post by chris_g »


Jockinireland wrote: Sat Oct 09, 2021 12:09 pm
Your flats seem to be 0.5 or 0.6s, your dark flats from 4 to 20 seconds mostly 15. I've always believed that flats and dark flats should be the same duration and ISO so I only used Bias darks and flat for calibration. Which I did in APP

When looking closely, your stars are a bit trailed, all the same direction suggesting guiding was not great. You mentioned using PHD2 - do you have the guide log for that night then we could see whats going on there.

David
Everything I read said dark flats were the same as flats except with the scope covered so I left it in AV. Finally found an article that said, exposure needs to match so I look at the exposure in the file name next time and set the exposure to that, then run the dark flat plan in APT.

The guiding issue was because I had the exposure on the guide camera set to 3 seconds when I was focusing the guide scope initially. I've since discovered that the best setting for PHD 2 is 1 second so it can react quicker to any changes. Straight out of the documentation on that :)

Thanks for everything David, knowledge is power.

Chris
Image Cam: Canon 6D (Ha mod), 600D (Stock), SVBony SV405CC
Image OTA: EvoStar ED80, WO Z73, C8-A XLT
Mount: EQ6-R Pro Pier, AZ-EQ5 Pro Pier
Guide OTA: Orion 60mm, WO 32mm, ZWO OAG, SV501P
Guide Cam: ZWO 120mm, 290mm mini
EAA OTA: Orion ST80
EAA Cam: SVBony SV705C
EP: Baader Hyperion Modular Set
Filters: L-Pro Canon EOS C, L-eNhance, L-Pro, Optolong Ha 7mm, Optolong Oiii 6.5mm, Optolong Sii 6.5mm, ES H-Beta
Session Control: Mini PC/Win11 Pro, APT 4.1, PHD2 2.6.10
Processing: PixInsight, DSS 4.2.6, Adobe PS CC, Astronomy Tools Action Set, Star Spikes Pro
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