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

M51 -- Whirlpool Galaxy

Object

Type

Spiral Galaxy

Constellation

Canes Venatici

Distance

31M light years

Magnitude

8.4

Size

11.2 x 6.9 arc-min

Notes

NGC 5195 is the interacting galaxy left of M51 in the image

Image

Date

2020-04-25 thru 2020-05-02

Place

Bixhoma Observatory (H33)

Exposure Data

HaLRGB 200:275:165:160:135 mins @ -30C

Ha 10x20, Lum 55x5, R 33x5, G 32x5, B 27x5

Notes

All filters binned 1x1

NGC 5195 is the interacting galaxy to the left of M51

Equipment

Optics

Planewave 17" CDK

Focal Length

2932 mm @f/6.8

Mount

Paramount ME

Camera

SBIG STXL-6303E w/ AOX

Focuser

IRF90 - Integrated Rotating Focuser

Filters

FW8G-STXL, Astrodon G2E LRGB, HAlpha 3nm

Software

TheSkyX, FocusMax4, CCDAutopilot5, CCDStack 2+, PhotoShop CS6, eXcalibrator