SharpCap Forums

I'm not the expert on planetary but I think I'm in the ballpark with my analysis. The bottom line is that you are better off without the Barlow. For a 10" aperture (254mm) Dawes' Limit is 0.46 arc-seconds, Rayleigh Limit is 0.54 arc-seconds. So given exceptionally stable skies and perfect optic...

The Sv305 uses the tried and true IMX290 sensor. I have one but it's from Altair Astro. It is a 2 mega-pixel sensor (1920 x 1080). My Windows laptop has 4GB of RAM but I don't LiveStack. Works great. I can't say if 4GB is enough for LiveStack, so I'd recommend 8GB of RAM to be safe. However, if you ...

Hi Nick,

Great image! Very nice kit. Love the mount! You invested some serious money and it shows.

Brian

Robin, Full Well at Gain 56: 21.6ke- using High Gain Mode 40.0ke- using Extended Full Well Mode Read Noise at Gain 56: 1.7e- using High Gain Mode 7.1e- using Extended Full Well Mode I absolutely agree! That's a huge improvement. I'd even suggest using High Gain Mode with all filters, not just NB. ED...

Hi Allen,

Just curious, what scope do you have? From the numbers shown you could really benefit from a faster scope given your dark skies.

Brian

Hi, You may be confusing 'Celestial Equator' with 'Local Meridian'. Your Local Meridian divides the eastern and western halves of your sky. The dividing line is the Great Circle connecting three points: the South Celestial Pole, the Zenith, and the North Celestial Pole. The Zenith is the point in Sp...

Hi, Eta Carinae is at -60 declination, so you're close to the pole. I wish I could offer more help but I've got zero experience with Dobs, however, I have seen posts on this forum from owners. Try typing "Dob" into the search bar. Astrophotography is a humbling hobby perhaps more so than g...

Hi, Where are you pointing? If it's near the celestial equator then you'll suffer the worst star drift per exposure. Try something farther north like Cassiopeia. There is a fine double star cluster that is bright. See my photo here: https://forums.sharpcap.co.uk/viewtopic.php?t=5987&hilit=double...

I had the same problem with my new neighbors. City folks escaping urban violence, but then they're afraid of the dark. After two years they finally turned off the light.

Edit: I wish people were just as concerned with light pollution as they are with other types.

Brian

Hi Steve,

The Flats are working. It removed some dust donuts on the sensor. However, the large concentric circles look to me to be either (a) condensation on the sensor, (b) a light leak. I'm leaning towards condensation. Try imaging without the cooler turned on.

Brian