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BAA Images Kevin Gurney

Observation by Kevin Gurney: M101

Uploaded by

Kevin Gurney

Observer

Kevin Gurney

Observed

2021 Jul 18 - 23:00

Uploaded

2021 Aug 05 - 17:20

Objects

M101

Planetarium overlay









Constellation

Ursa Major

Field centre

RA: 14h03m
Dec: +54°22'
Position angle: -2°42'

Field size

0°28' × 0°22'

Equipment
  • Altair Astro RC10 truss tube
Exposure

L, 12x300s, , RGB, 7x300s each. All bin 1x1

Location

Charente, France

Target name

M101 in LRGB

Title

M101

About this image

Having done battle with the pandemic travel requirements, we eventually made it to France where I could try out the new obsy. The Ritchey Chretien scope had been in storage and required some TLC to coax into action... Although I had takenĀ  'snaps' of M31 and M33 on a refractor last year to test things out, I considered this 'First Light' proper.

I was also using a CMOS camera (ASI1600) rather than the Atik460 for imaging for the first time. I wanted the best dynamic range so set the 'gain' to zero. Total integration tme was 2hr 45min

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