Quote:
Originally Posted by scagman
Hi guys,
I am after a focal reducer for a North Group ED127 F7.5. Has anyone used one with this scope?. It will be used with a Meade DSI II on DSO's. Would I need a field flatener too.
Would I be better with a 2" or 1.25"?
Any thoughts on the this on http://www.myastroshop.com.au/guides...ar-reducer.htm or there's one at andrews on the Guan Sheng Acc. page.
Any thoughts/suggetions.
Thanks |
John,
the Ed127 has a fairly flat field as is. That is not to say it can't be improved, but if you're just getting your feet under the astroimaging table, I woudn't spend mooney on one just yet. Similarly with a reducer. They have a place but generally, you need to get your head around other stuff first.
I have an ED127 and use a Williams Optics IV reducer/flattener and am happy with the results but it wasn't cheap. Hotech also make a good flattener but my suggestion is to get your imaging skills in place first and worry about that last 5% afterwards.
Peter