View Single Post
  #11  
Old 16-01-2022, 01:20 PM
Zuts
Registered User

Zuts is offline
 
Join Date: Mar 2007
Location: sydney
Posts: 1,837
Guide camera

I own a ZWO 120 MM, but was testing a friend's ZWO 290 MM and I can't remember which one I was using that night.

Image Scale

If you mean FL ratio then the Esprit 120 has a FL of 840 plus a bit more with the 1.01 flattener.

The guide scope is a Baader Vario with a 60 ml objective and 250 ml FL so around 3.4 : 1

https://www.baader-planetarium.com/e...0x60-3069.html

Guiding

No dark calibration, 2 second exposures, multistar guiding with ASIAir plus

Cheers
Paul
Reply With Quote