All Images Copyright Rod Gallagher                                      Click on image to see full size

M52 -- Open Cluster

NGC7635 -- Bubble Nebula

Object

Type

Open Cluster

Constellation

Cassiopedia

Distance

4.6k light years

Magnitude

7.3

Size

13.0 arc-min

Image

Date

2021-07-07

Place

Cheddar Ranch Observatory

Exposure Data

HaLRGB 30:85:90:70:60 mins @ -15C

HAlpha 6x5, Lum 17x5, Red 18x5, Green 14x5, Blue 12x5 min

Notes

HAlpha and Lum frames binned 1x1, RGB frames binned 2x2

NGC 5195 is the interacting galaxy to the left of M51

Equipment

Optics

Takahashi TOA-150

Focal Length

1100 mm @f/7.3

Mount

Paramount ME

Camera

SBIG STL-6303E

Focuser

RoboFocus

Filters

Internal CFW, Astrodon LRGB (Gen 2), Astrodon HAlpha (3 nm)

Software

TheSkyX, CCDSoft, CCDAutopilot5, CCDStack 2+, PhotoShop CS6, eXcalibrator