M67 is an open cluster located about 2600 light-years away in the constellation Cancer. Also designated NGC 2682, the cluster was discovered by Johann Koehler in 1779 and is one of the oldest clusters in the Milky Way at around 4 billion years old. It is one of most well-studied clusters due to its relative proximity to Earth and its large number (more than 100) sun-like stars.
Acquisition:
Imaged over 7 nights in January 2017 from Lake St Louis, MO
Integration: 11.7 hours (LRGB)
Luminance: 36x600s @ 1x1 (360’)
R/G/B: 22/22/22 x 300s @ 2x2 (110’/110’/120’)
Equipment:
Scope: William Optics GTF 81 5 element refractor (535mm focal length)
Upgraded with Moonlite CF focuser with motor
Imager: QHY9Ms with Olivon OAG and QHYCFW2-s filter wheel
Guidecam: ASI120MM
Filters: Baader LRGB
Mount: Orion Atlas EQ-G
Processing and Software
Guiding with PHD2
Acquisition with Sequence Generator Pro
Integration and processing with PixInsight 1.8
