Celestial hemisphere:  Northern  ·  Constellation: Vulpecula (Vul)  ·  Contains:  Dumbbell nebula  ·  M 27  ·  NGC 6853  ·  The star 14Vul
M27 Dumbbell Nebula, Vixen 81s + Altair 183C, turfpit
M27 Dumbbell Nebula, Vixen 81s + Altair 183C
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M27 Dumbbell Nebula, Vixen 81s + Altair 183C

M27 Dumbbell Nebula, Vixen 81s + Altair 183C, turfpit
M27 Dumbbell Nebula, Vixen 81s + Altair 183C
Powered byPixInsight

M27 Dumbbell Nebula, Vixen 81s + Altair 183C

Equipment

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Acquisition details

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Description

Living at 53°N, this image was captured at a Bortle 6 site when there was no astronomical darkness. The 1h 40m capture of lights took place between 00:40 and 02:20 on 29th June 2019.

Equipment: Celestron AVX, Vixen 81s, Altair 183C, Altair 1.0x flattener.

Preparation: 2 alignment + 4 calibration stars + All Star Polar Align. A Bahtinov Mask was used for focus.

Software: SharpCap, FITS Liberator, SiriL, GIMP.

Capture: RAW12, Black Level 30, Gain 200, Exposure 60s, unguided.

Data: lights 100x60s, darks 60, bias 100, flats 100.

Processing: SiriL was used to calibrate, register and stack (best 90% based on FWHM) the frames and carry out crop, background extraction, colour calibration, colour saturation, remove green noise & histogram transformation. Minor edits and colour balance carried out in GIMP.

FITS Liberator was used to check that a bias frame at gain 200 & black level setting of 30 had a centralised histogram plus test frames to establish the exposure setting gave a reasonable histogram for capture.

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M27 Dumbbell Nebula, Vixen 81s + Altair 183C, turfpit