Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool galaxy
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M51 - First Time Successfully Autoguiding, 


            Damien Cannane
M51 - First Time Successfully Autoguiding
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M51 - First Time Successfully Autoguiding

Technical card

Imaging telescopes or lenses: Orion ED80T CF

Imaging cameras: Canon EOS Rebel T6

Mounts: Celestron AVX

Guiding telescopes or lenses: Orion Mini 50mm Guide Scope

Guiding cameras: ZWO ASI224MC

Focal reducers: Orion Field Flattener for Short Refractors

Dates:April 17, 2017

Frames: 10x180" (30') ISO800

Integration: 30'

Darks: ~9

Flats: ~30

Bias: ~30

Avg. Moon age: 20.40 days

Avg. Moon phase: 68.13%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 1543876

RA center: 13h 29' 55"

DEC center: +47° 11' 38"

Pixel scale: 2.499 arcsec/pixel

Orientation: 89.935 degrees

Field radius: 0.376 degrees

Resolution: 766x766


My second time out with the new small triplet, and my first successful autoguide. I managed 3-minute exposures, which is pretty exciting when your previous best was 45 seconds!

I was hampered by clouds, and so I only had time to take 12 subs, of which 10 were useful. I'm not happy with the background noise, which I think will improve quite a bit when I acquire more lights. I will try for 5-minute exposures next time.

Hope you enjoy.


Sky plot

Sky plot


M51 - First Time Successfully Autoguiding, 


            Damien Cannane

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