Observation by Grant Privett: M101

Uploaded by

Grant Privett

Observer

Grant Privett

Observed

2018 May 06 - 02:47

Uploaded

2018 May 06 - 02:51

Objects

M101

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Constellation

Ursa Major

Field centre

RA: 14h02m
Dec: +54°13'
Position angle: +92°08'

Field size

1°07' × 0°54'

Equipment
  • 11" Celestron RASA
  • Paramount MEII
  • Trius 694
Exposure

60s x65

Location

Salisbury

Target name

M101

Title

M101

About this image

Median stacked as at least 8 images had satellites or meteors on.

I did write some notes on this but they appear to have vanished.

Before taking it I did try images with and without x2 binning. Was impressed by how little difference it made to the strengths of detections of stars. The background sky certainly dominates the frame stats in the UK. Nice to see though that in a 60s frame stars of magnitude 17.5 were detected. So with stacking this images should be rather deeper.

Dithering was worth doing.

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