SharpCap Forums

Hi Alejandro, I am replying based on my experience with "short" exposures. What is short? It's all relative. What's short for me is long for the next person depending on sky brightness, camera, and scope. What does your sensor analysis say? Mine says 60 seconds so I know I'll have trouble ...

Jerry, If you have a smartphone (I have an iPhone 12) go to the App Store and search for "ephemeris". The app you are looking for is "Ephemeris: Moon and Sun Seeker" by Vito Technology. It uses the phone's built-in hardware to tell where the Sun and Moon are in real-time. It uses...

Amazed at how you picked up Hadley rille so clearly! (Apollo 15 landing site)
Great work, Dave.

Brian

Jerry, I know this isn't a comforting thought but the AM5 has a significant Periodic Error (PE) of +/- 20 arc seconds, so you will need auto-guiding for deep-sky especially narrowband. They claim auto-guiding accuracy of 0.5 to 0.8 arc seconds. Therefore, the post-alignment problems you are experien...

Hi Jerry, I had similar problems with my German Equatorial mount until I found the culprit. I hadn't thoroughly locked the mount in place after completing polar alignment. There was still some play in the altitude and azimuth adjustment. Also look for possible movement in the tripod. I recommend usi...

I can attest that you will get great results with that exposure since the parameters are very similar to mine. However, I'll add that you will need more integration time for SII and OIII since they are generally much weaker than Ha, that is if you are using a mono camera. (I'm not familiar with usin...

(Robin, please move this to its own topic.) There is a site called Space Weather that I read daily. Several days before the event they had predictions. There was agreement to expect a 3 magnitude dip, but as the data rolled in from amateurs everyone reported 2 magnitudes. One respondent mentioned th...

If my math is correct, that's a 2 magnitude drop.

There is noise in the dip. Please plot again for the range of 4000 to 5000 on the time scale.

Brian

Which RedCat? 51, 61, or 71? Each has a different focal length. Will you use the ASI294 with it? Edit: You answered my question. Here is your FOV: Screenshot 2023-12-10 at 10.11.46 PM.png Regarding the solar filter, you absolutely need to remove it during totality or else you'll see nothing. Totalit...

I ran a calculation on your field-of-view given the specs of your scope and camera that you provided in your post. Your FOV looks great but like I said keep an eye on it. Don't let it drift too far out of center: Screenshot 2023-12-10 at 2.46.46 PM.png My last concern is for you to make sure that yo...