Observation by Robert James Stuart: M13 guided

Uploaded by

Robert James Stuart

Observer

Robert James Stuart

Observed

2017 Aug 31 - 23:15

Uploaded

2017 Sep 01 - 20:14

Objects

The Great Globular Cluster in Hercules (M13)

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Constellation

Hercules

Field centre

RA: 16^h41^m
Dec: +36°25'
Position angle: +56°40'

Field size

1°08' × 0°45'

Equipment

CGX mount with Starsense
NexGuide autoguider
Vixen VC200L f9
Nikon D800

Exposure

4x 300s exposure stacked in DeepSkyStakkert

Location

Rhayader Mid Wales

Target name

M13 globular

Title

M13 guided

About this image

Following on from unguided exposures on the CGX mount, this was 4x 300s iso 200 guided exposures with NexGuide auto guider, Moon was quite bright, sky background light even at this unearthly hour! Star images are small and round, no sharpening has been applied to this image, just exposure contrast and saturation. The CGX and NexGuide combination with 60mm f4 guidescope (with 2x barlow giving 480mm focal guide length) has worked very well and has produced a decent result even with the bright sky. I will try longer exposures and up ISO to 320 to boost image without to much gain in the noise

Files associated with this observation

stacked image M13.jpg (1.4 MB)

Like this image

Jeremy Shears, Nick Hewitt, David Basey, Dawson, Carolyn Kennett, Peter Carson

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