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Comet C/2017 T2 PANSTARRS Meets Up With Messier 106, 


            Terry Hancock

Comet C/2017 T2 PANSTARRS Meets Up With Messier 106

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Technical card

Imaging telescopes or lenses: William Optics WO FLT 156

Imaging cameras: qhyccd 367 Pro C

Mounts: software bisque Paramount ME

Guiding cameras: QHYCCD QHY178MM

Software: PixInsight 1.8  ·  Adobe Photoshopc CC


Resolution: 7232x4810

Data source: Own remote observatory

Remote source: Grand Mesa Observatory


Another collaboration between Tom Masterson and Terry Hancock
In this image taken at Grand Mesa Observatory, Comet C/2017 T2 takes another photo op as it passes by Galaxy Messier 106 (M106) in the night sky this past Tuesday night, June 23, 2020.

Discovered on Oct. 2, 2017 by the PanSTARRS sky survey, this comet has put on quite the show over the past couple months. Here it's seen passing within a degree from M106, a very close and beautiful event. While they might look really close to each other in this image If you were travelling at the speed of light it would take between 22 to 25 million light-years to reach M106 but only 14.5 light-minutes to reach Comet C/2017 T2.

Messier 106 is an intermediate spiral galaxy located in the constellation Canes Venatici and It’s is one of the largest and brightest nearby galaxies similar in size and luminosity to the Andromeda Galaxy.

A great write-up on Comet C/2017 T2 can be found on Universe Today at:

A real time tracker of Comet C/2017 T2 can be found here:

Wiki of M106:

Technical Info:

Captured from Grand Mesa Observatory in Western Colorado on the June 23, 2020 using the QHY367 Pro C Full Frame One Shot color CMOS camera on the William Optics 156 Refractor Telescope.

Total Integration time: 2.1 hours

Image details

Location: Purdy Mesa, Colo.
38.963365, -108.237225

Dates of capture: June 23, 10:08pm - June 24, 12:17am
Color RGGB 125 min, 20 x 300 sec, 10 x 180 sec.
Camera: QHY367 Pro C Color CMOS
Gain 2850, Offset 76
Calibrated with flat, Dark & Bias
Optics: William Optics 156 Refractor Telescope
Image Acquisition software Maxim DL6
Pre Processed in Pixinsight and Deep Sky Stacker
Post Processed in Photoshop



Terry Hancock
License: None (All rights reserved)


Comet C/2017 T2 PANSTARRS Meets Up With Messier 106, 


            Terry Hancock