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Contains:  The star 4Vul, The star 5Vul
Getting plate-solving status, please wait...
Brocchi's Cluster   Collinder 399  The Coathanger, 


Brocchi's Cluster   Collinder 399  The Coathanger
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Brocchi's Cluster Collinder 399 The Coathanger

Technical card

Imaging telescopes or lenses: Astro-Tech AT72ED 430mm F6

Imaging cameras: Sony Nex-5 modified

Mounts: Celestron CG-5 Advanced GoTo

Guiding cameras: Sony Nex-5 modified

Focal reducers: Orion Field Flattener for Short Refractors

Software: PixInsight

Filters: Solomark Uv Ir Cut Block Filter

Accessory: Farpoint Astronomy Bahtinov Focus Mask  ·  DIY Dew Heater System  ·  gentLED-AUTO Intervalometer  ·  DIY Pier

Dates:July 15, 2015

Frames:Solomark Uv Ir Cut Block Filter: 9x60" ISO1600

Integration: 0.1 hours

Darks: ~200

Flats: ~75

Bias: ~200

Avg. Moon age: 28.99 days

Avg. Moon phase: 0.33%

Bortle Dark-Sky Scale: 7.00

Temperature: 25.00

Basic astrometry details job: 691599

RA center: 19h 26' 2"

DEC center: +20° 32' 20"

Pixel scale: 4.875 arcsec/pixel

Orientation: 1.965 degrees

Field radius: 1.263 degrees

Resolution: 1365x1270


This is not a real cluster. Just an chance alignment of stars.

This is only nine minutes of total exposure time. What makes this worse was it was through high clouds. Not the image I wanted. I'm posting it anyway. Hopefully I will get some real data soon and be able to replace this image. Processing wise it's a little hard to do much with a shoot through clouds.

In the mean time it is an interesting cluster.



License: None (All rights reserved)

Sky plot

Sky plot


Brocchi's Cluster   Collinder 399  The Coathanger,