SharpCap Forums

turfpit wrote: ↑Mon Jan 23, 2023 5:28 pm

60s (unguided) is possible out of my setup?

You will have to try it to find out. A good polar alignment will be needed coupled with a careful star alignment.

Dave

star alignment on the Star Adventurer Pro 2i Wifi ?

thanks Dave, Brian & Robin.

So 60s (unguided) is possible out of my setup? interesting, maybe worth a shot at that

Hi Robin thanks for the (as ever) helpful reply. My Bahtinov pattern indicates that focus is pretty much "on". so if exp=30s / gain =150 are good settings to apply, would there be anything else in Sharpcap to change for the better? I'm thinking change to .fits instead of .tif files? - if y...

Equipment : ♦ Zwo ASI 183MC Pro (cooled), ♦ Skywatcher Evostar 72ED DS-Pro ♦ Skywatcher Star Adventurer Pro 2i Wifi ♦ Optolong UHC Light Pollution Filter 2" ♦ Stellamira Field Flattener / 0.8 Reducer With the above setup I can successfully track unguided for between 30-35s. I'm in a bortle 6 l...

You could try to add a bit more distance between reducer and camera but I doubt that will help: I just noticed that the stars are not elongated and most of the times just that is a sign of too little or too much reducer/camera backfocus . See image below showing how it would look like. The camera a...

thanks for the advice. Having just measured the backfocus there's definitely (at least) 55mm from reducer to Zwo sensor.

my setup (front to back) is:

Scope > Optolong LP Filter > Stellamira 0.8 Reducer/Flattener > Zwo tubes > Zwo 183 MC Pro

hi Robin
thanks for the reply. I'm using a Bahtinov and the "spike" looks pretty sharp (at 100%) and aligned as per this online image that I've used as a guide:

Equipment/Software etc ♦ Zwo ASI 183MC Pro (cooled) ♦ Skywatcher Evostar 72ED DS-Pro ♦ Skywatcher Star Adventurer Pro 2i Wifi ♦ Optolong UHC Light Pollution Filter 2" ♦ Stellamira Field Flattener / 0.8 Reducer ♦ Bahtinov So, The above setup is unguided - that perhaps a venture for when I have ...

yep, it's definitely a case of adding a debayering stage to the pre-stacking process.
PiPP has done the job nicely.

workflow now =

Capture [Sharpcap] > Debayer [PiPP] > Stack [DSS] > Processing [PShop / Affinity]

thanks Robin

I've just in the last hour or so installed Pipp and debayered - as RGGB (the tif file setting for the Zwo). awaiting the completed DSS stack to see what i have.
I'll report back