View Single Post
  #2  
Old 07-04-2014, 03:14 PM
Shiraz's Avatar
Shiraz (Ray)
Registered User

Shiraz is offline
 
Join Date: Apr 2010
Location: ardrossan south australia
Posts: 4,787
Hi Josh

For high res DSO imaging, targets will still be fairly dim and you will be limited by the atmosphere to maybe 1 arc sec under the absolute very best conditions, at which you would need sampling of about 0.35 - 0.5 arc sec and for this, up to to 2x would be the go for your 11000.

Planetary targets are bright enough for high framerates, which allows you to cut through the seeing and get close to the theoretical scope resolution. With a planetary camera with 3.75 micron pixels, you would need about f19, so a 2.5x would be good.

Maybe a good overall solution would be to get a 2x - it will be OK for both cameras (not quite ideal for planetary, but within spitting distance most of the time - use drizzle stacking if you happen upon some really fine seeing)

Last edited by Shiraz; 07-04-2014 at 04:12 PM.
Reply With Quote