Search found 793 matches

by oopfan
Tue Dec 15, 2020 3:18 pm
Forum: General Discussions
Topic: Optimizing sharpness with SNR. DSO "lucky" imaging ?
Replies: 6
Views: 239

Re: Optimizing sharpness with SNR. DSO "lucky" imaging ?

Tim, I've held off from replying due to the word "DSO" in the title, but now that I see that the topic has shifted towards imaging stars, I can add something to the discussion. Feel free to use sub one-second exposures for the Lyra double-double. They are bright at 6th magnitude. If you ha...
by oopfan
Mon Dec 07, 2020 6:36 am
Forum: How do I?
Topic: Multistar FWHM and full-Moon sky brightness
Replies: 9
Views: 351

Re: Multistar FWHM and full-Moon sky brightness

Anthony, I know that some people swear by Bahtinov Masks, but I stopped using mine for two reasons: you need a bright star, and you risk accidental loss of PA putting it on and taking it off if you bump the tripod/mount. Also, I focus often, after slewing to a new object and after a filter change. I...
by oopfan
Sat Dec 05, 2020 5:10 pm
Forum: How do I?
Topic: How do I (can I) use SC to test ASI294 linearity
Replies: 15
Views: 502

Re: How do I (can I) use SC to test ASI294 linearity

Gary, I recognize the document in the screenshot of your original post: AAVSO's CCD Photometry Guide. I agree with Robin. You need a very stable light source. I tried an Electroluminescent Panel but found that the brightness varied. I ended up using an LCD monitor. I've attached results for a run at...
by oopfan
Sat Dec 05, 2020 12:38 am
Forum: Gallery
Topic: Guess the name of this large Lunar Crater with its central peak?
Replies: 1
Views: 230

Re: Guess the name of this large Lunar Crater with its central peak?

PYTHAGORAS

Geological period: Eratosthenian (From -3.2 billions years to -1.1 billions years)
Dimension: 129.0x129.0Km / 78.0x78.0Mi
Height: 4800.0' / 14500.0ft

Virtual Moon Atlas says that it is in the northwest quadrant, not southwest.

What do I win?
BTW, decent photo :-)

Brian
by oopfan
Mon Nov 30, 2020 4:09 pm
Forum: Gallery
Topic: An Oldie but Goodie: NGC7635 The Bubble Nebula
Replies: 6
Views: 261

Re: An Oldie but Goodie: NGC7635 The Bubble Nebula

Hi Bruce, Awesome image! For inspiration (and humiliation) I visit Sara Wager's website. Here is her rendition of the Bubble: https://www.swagastro.com/ngc7635.html Astro-Physics' website also shows a cyan bubble: https://www.astro-physics.com/ She did not specify, but I believe it is SHO. Plenty of...
by oopfan
Sun Nov 29, 2020 2:17 am
Forum: Gallery
Topic: Open Star Cluster M34 using a Newtonian Mask
Replies: 7
Views: 708

Re: Open Star Cluster M34 using a Newtonian Mask

Tim, That is a tight FOV! You've got good star color. It is amazing what CMOS cameras can do with such short exposures. On the positive side, your FOV would be great for galaxies. M81 Bode's Galaxy will be coming around soon. Give it a try. Here is mine from a year ago. I used Bin 1 for luminance, a...
by oopfan
Sat Nov 28, 2020 5:55 am
Forum: Gallery
Topic: Open Star Cluster M34 using a Newtonian Mask
Replies: 7
Views: 708

Re: Open Star Cluster M34 using a Newtonian Mask

Hi Tim, Thank you for your reply! Great questions. The Newtonian Mask adds visual interest. I have a refractor. Refractors render stars as round discs due to the clear, unobstructed path provided by the lens system. Newtonian reflectors utilize two mirrors. The primary mirror gathers starlight, and ...
by oopfan
Wed Nov 25, 2020 9:46 pm
Forum: Scripting
Topic: My BATCH Script
Replies: 9
Views: 518

Re: My BATCH Script

Hi Robin,

'import socket' works for me, but I am running SharpCap 3.1, second to last patch.

Brian
by oopfan
Wed Nov 25, 2020 11:16 am
Forum: Scripting
Topic: My BATCH Script
Replies: 9
Views: 518

Re: My BATCH Script

Jesus,

I enjoyed reading your code. Very well-structured, and makes maximal use of the Windows Forms library.

Thanks,
Brian
by oopfan
Sun Nov 22, 2020 8:32 pm
Forum: Gallery
Topic: Perseus Double Cluster and NGC 1664
Replies: 1
Views: 208

Re: Perseus Double Cluster and NGC 1664

One last iteration...
Perseus-Double-Cluster_W12-26x60s_R-70x60s_G-35x60s_APP_S15-3-25_SA-35-25_G94_NEAT_GIMP.jpg
Perseus-Double-Cluster_W12-26x60s_R-70x60s_G-35x60s_APP_S15-3-25_SA-35-25_G94_NEAT_GIMP.jpg (123.26 KiB) Viewed 180 times
NGC-1664_W12-45x60s_R-70x60s_G-35x60s_APP_S15-3-25_SA-35-25_G95_NEAT-GIMP.jpg
NGC-1664_W12-45x60s_R-70x60s_G-35x60s_APP_S15-3-25_SA-35-25_G95_NEAT-GIMP.jpg (96.41 KiB) Viewed 180 times
I think I'm going with this going forward.

Brian