casstony
06-10-2018, 01:42 PM
I took a few images through the Televue 85 last night to see how it performs compared to other refractors I've used. It's not as good as the NP101 (expected) but IMO it's better than the Tak FC100d for OSC imaging.
I get the impression that the FC100 is better corrected towards blue but colours look washed out (especially red) while the TV85 is better corrected towards red but there are slight violet halos on bright stars.
NGC 253 is only 26 minutes as my battery went flat; Tuc 47, M27, M8 are one hour (30x2 min).
TV85, WO reducer, IDAS P2, D5600
I'm still just mucking around (and having fun) with imaging but I plan to get a bit more serious from now and try to use longer focal lengths and more time on those smaller targets.
I get the impression that the FC100 is better corrected towards blue but colours look washed out (especially red) while the TV85 is better corrected towards red but there are slight violet halos on bright stars.
NGC 253 is only 26 minutes as my battery went flat; Tuc 47, M27, M8 are one hour (30x2 min).
TV85, WO reducer, IDAS P2, D5600
I'm still just mucking around (and having fun) with imaging but I plan to get a bit more serious from now and try to use longer focal lengths and more time on those smaller targets.