Search found 401 matches

by oopfan
Wed Jan 16, 2019 3:37 pm
Forum: Deep Sky Imaging
Topic: Another Offset Question
Replies: 76
Views: 4582

Re: Another Offset Question

CCD, simplicity defined. It amazes me how aggressively CMOS is marketed to amateurs yet it is so much more complicated to use properly. There are simply too many levers to pull to get yourself into trouble. Thank you AAVSO for your online course on CCD Photometry which helped me make sense of this m...
by oopfan
Fri Jan 11, 2019 11:33 pm
Forum: How do I?
Topic: Brain Function and Narrow Band
Replies: 25
Views: 267

Re: Brain Function and Narrow Band

Don't get me started with Police Squad:

https://www.youtube.com/watch?v=het1kl-A8qw
:lol:

Brian
by oopfan
Fri Jan 11, 2019 10:55 pm
Forum: How do I?
Topic: Brain Function and Narrow Band
Replies: 25
Views: 267

Re: Brain Function and Narrow Band

Now that the tension has subsided a bit please allow me to inject a bit of humor... Several posts ago Nick began with "But surely..." The adolescent in me could barely resist replying "Don't call be Shirley" but the adult had the upper-hand. So now from the movie "Airplane": https://www.youtube.com/...
by oopfan
Thu Jan 10, 2019 11:47 pm
Forum: How do I?
Topic: Brain Function and Narrow Band
Replies: 25
Views: 267

Re: Brain Function and Narrow Band

Nick, Sky Glow is not noise it is signal. If you are trying to eke out every last bit of faint nebulosity you can do it as long as its signal strength is greater than the strength of the sky glow. Nebulosity that is fainter is beyond detection. Seems logical. The problem is that you are at the mercy...
by oopfan
Thu Jan 10, 2019 10:47 pm
Forum: How do I?
Topic: Brain Function and Narrow Band
Replies: 25
Views: 267

Re: Brain Function and Narrow Band

Nick,

Experiment.

Brian
by oopfan
Thu Jan 10, 2019 9:15 pm
Forum: How do I?
Topic: Brain Function and Narrow Band
Replies: 25
Views: 267

Re: Brain Function and Narrow Band

Hi Nick, The quality of my images have increased dramatically since adopting long exposures over short. Given a choice of exposure and one hour of total integration time (or any amount for that matter) you will always get better signal-to-noise with longer exposures. I put together a spreadsheet (sc...
by oopfan
Thu Jan 10, 2019 4:27 am
Forum: How do I?
Topic: Brain Function and Narrow Band
Replies: 25
Views: 267

Re: Brain Function and Narrow Band

Nick, That is very good news that the Brain recommended 296s. I reckon that Robin tweaked his code this past year! For luminance it said 15s at unity gain? I haven't had much success with 15s exposures. I'm old school so I don't Live Stack. I imagine that if I did Live Stack it would give instant fe...
by oopfan
Tue Jan 08, 2019 1:43 pm
Forum: General Discussions
Topic: Start Capture Timer
Replies: 3
Views: 69

Re: Start Capture Timer

Udemy has a sale on Python courses for $9.99 for the next two days:

https://www.udemy.com/topic/python/

Brian
by oopfan
Mon Jan 07, 2019 8:45 pm
Forum: How do I?
Topic: Brain Function and Narrow Band
Replies: 25
Views: 267

Re: Brain Function and Narrow Band

Hi Nick, I don't follow everyone's posts so I don't know if you've got 'offset' under control. I know that ZWO, for a while, took away user control of offset but now I hear rumors that they re-enabled it. My understanding is that they were receiving a lot of questions/complaints about offset so they...
by oopfan
Mon Jan 07, 2019 6:03 pm
Forum: Tutorials
Topic: hassle-free polar alignment
Replies: 3
Views: 205

Re: hassle Free polar alignment

Nice video Mitch. Just a minor point: "hassle Free" is usually hyphenated "hassle-free". When I initially saw this topic the word "Free" caught my attention. I said "Oh wow, 'free polar alignment'". Then I saw "hassle" and thought "Oh cool, this free software is named 'hassle'". I suspect this was a...