Sh2-261 also known as Lower's nebula is an emission nebula in Orion's constellation.
It's an Ha region located on the outer part of the Orion's Arm, close to the limit of this arm and the Perseus' Arm.
The distance to the solar system is estimated in 3260 l.y. [Wiki] |
|
|
| Optic |
SW Quattro 8S 200mm f/4 with Baader MPCC Mark III corrector |
| Camera |
Atik 383L+ |
| Filters |
Baader Ha, OIII, SII, R, G, B 36mm |
| Mount |
NEQ6 with EQASCOM
|
Guide
|
SW 70/500 with AlCCD5
|
Frame center
|
RA 06:09:01 DEC 15:45:02 J2000
|
Date
|
December, January 2023
|
Site
|
Astrobioparco di Felizzano, AL, Italy
|
| Exposures
|
Ha - 40x900 bin 1x1 @-10C
OIII - 40x600s bin 2x2
SII - 40x600s bin 2x2
R - 12x300s bin 1x1
G - 12x300s bin 1x1
B - 12x300s bin 1x1
Integration time - 26h 20m
|
|
|
|
