Quote:
Originally Posted by Allan
Hey bigjoe. There are numerous reports of seeing it in good quality 4" refractors. I think the 3" size might be stretching the friendship, but it is up to us Southern Hemisphere observers to try. It's clear with low humidity right now, so I'll give it another go tonight.
As Adrian has posted, a 12" dob is a good scope to use and the extra aperture makes it easier. What I found side by side with my 12" dob and 5" refractor was that Sirius was a little tighter, with less flairing and scatter in the refractor, so the split was a little cleaner, and more aesthetically pleasing.
|
Hello Allan.
We would all be happy to hear if you are able to do this-let alone attempt this in such a small, but superb instrument.
You'll have the advantage of a nice fat Airy Disk and fainter diffraction rings to help mitigate speckling interference with the "PUP" though, in that refractor, and no Central Obstruction to deal with.
Darkening the sky background with higher magnification will help with separation and limiting magnification naturally, and the small exit pupil may help you if the seeing is not perfect.
So let's see if you can do it!!
bigjoe.