BANGKOK DEEP-SKY OBJECTS OBSERVING
How to make Field Of View (FOV) circle:
1) compare stars in finder scope with sky atlas to get the estimated
field of view as samples below
2) draw a circle on transparent sheet with blue or green permanent pen.
The FOV circle that a little smaller than actual one is better in order to ensure
overlap of each hopping FOV to protect lost in space.
3) repeat 1) & 2) for eyepieces, use to ensure the target is in FOV of eyepieces.
 |
Caster & Pollux and Rho geminorum in Gemini are quite fit within
6 degree FOV
|
