| Brent |
| (member) |
| 06/24/09 10:22 AM |
Re: Using the Questar Standard finder
|
Quote:
You Have to remember that the field of view is about 2-1/2 degrees with your 16 mm brandon eyepiece, In the 32 mm Brandon it is approximately 5 degrees (see page 36 in your owners manual eyepiece magnification and field of view)
Chris,
Please note that these FOV figures that SATMAN gives are for the Questar with 10X finder (a field scope item used by birders -- I don't know if it's even available for the astro model). For the standard 3-1/2 astro model, the finder will yield closer to the following calculated FOV as per the manual (p. 39 in mine):
32mm Brandon -- 13.46 degrees -- at 3X magnification
24mm Brandon -- 10.09 degrees -- at 4X magnification
16mm Brandon -- 6.73 degrees -- at 7X magnification
12mm Brandon -- 5.05 degrees -- at 9X magnification
8mm Brandon -- 3.36 degrees -- at 13X magnification
Hope this helps clarify.
Clear Skies,
Brent