M13 - Zenithstar and Hypercam (Tom Gray)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: HD150679 · HD150998 · Hercules Globular Cluster · IC 4617 · M 13 · NGC 6205 · NGC 6207

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M13 - Zenithstar and Hypercam

Revision title: Lightened background, tamed core

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M13 - Zenithstar and Hypercam

Revision title: Lightened background, tamed core

This is the first time I've used by Altair hypercam 183C camera with my WO Zenithstar 80II ED semi-APO refractor, and I think they make a very acceptable pairing. Stars are pin sharp, and not too much rogue colour, although my processing is far from perfect. With an imaging scale of 1.8"/px (2x2 binning) this is much more suited to our conditions, and would support full 20 MPx resolution under excellent conditions.

The 80 II ED is mounted on an adapted Meade LX6 drive with a homemade cradle, which is far from orthogonal, leading to some pretty strange guiding. I spent the first half of the night trying to sort this out, under fairly windy conditions, before turning my setup to a summer favourite. I added encoders to this last year, which makes finding targets very much easier with my trusty ArgoNavis.

So much crisper than my SCT, with a generous field of view with my hypercam, I'm looking forward to having a go at some galaxy clusters before they disappear into the summer glare.

Original
B
C
E
Final
F

B

Title: Less stretch, more saturation

Description: Tweaked to improve colour and tidy up the background

Uploaded: ...

C

Title: Reprocessed with new darks

Description: I think this is an improvement, after taking a new set of darks at the correct exposure. A blend of the original and previous revision - keeping the blue stragglers in a golden core. Longer integration would increase the depth and improve the 'dirty' stars in the periphery of this great globular.

Uploaded: ...

E

Title: Added another 45m data total 81m

Uploaded: ...

F

Title: Lightened background, tamed core

Description: My final, and hopefully more sympathetic rendition of the 'crown jewels'

Uploaded: ...

Messier Objects
Altair Astro 183 M/C Hypercams
UK Astro-Imaging

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Status	Advanced success
Started	...
Astrometry.net job	5727075
PixInsight job	BQBV3R1W48RSWHXPZOD794Q59996AFX3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h41m48s.16
RA (top/left)	16h45m11s.27
RA (top/right)	16h38m34s.11
RA (bottom/right)	16h38m26s.32
RA (bottom/left)	16h44m59s.21

Dec (center)	+36°29′33″.1
Dec (top/left)	+36°54′14″.6
Dec (top/right)	+36°57′12″.5
Dec (bottom/right)	+36°04′35″.7
Dec (bottom/left)	+36°01′38″.1

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M13 - Zenithstar and Hypercam

Revision title: Lightened background, tamed core

M13 - Zenithstar and Hypercam

Revision title: Lightened background, tamed core

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M13 - Zenithstar and Hypercam

Revision title: Lightened background, tamed core

M13 - Zenithstar and Hypercam

Revision title: Lightened background, tamed core

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