Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Great Cluster in Hercules  ·  HD150293  ·  HD150462  ·  HD150510  ·  HD150566  ·  HD150679  ·  HD150998  ·  Hercules globular cluster  ·  IC 4617  ·  M 13  ·  NGC 6205  ·  NGC 6207
M13 in June 2014, Stephen Migol
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M13 in June 2014, Stephen Migol
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Equipment

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Acquisition details

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Description

This image is a sum of 18 exposures at 1200 seconds each at 100 ISO.

Standard setup: Stellarvue SV4, Pentax K10D (modified and cooled - and broken shutter), SSF6 flattener

Filter: IDAS HEUIB II

Mount: Losmandy G11 with Gemini 2

Guiding scope: Stellarvue SV70ED with Orion SSAG

Guiding: Maxim 5.24

Exposure control: Star Labs DSLR Shutter and Pentax tethering software

Calibrated in Maxim with 10 darks, 21 flats, and 260 bias

Stacked in DSS 3.3.3 beta 51

Processed in PixInsight 1.8 with Crop, DBE, Masked Stretch, Histogram Stretch to reset black point, TGVDenoise, masked curves to boost saturation and reduce muddy sky glow, and unsharp mask on bright stars to tighten.

Passed through LR5 for export to web

Comments

Sky plot

Sky plot

Histogram

M13 in June 2014, Stephen Migol