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Astrophotography by Bob Franke

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Comet C/2017 T2 PANSTARRS

 

Click the image for a 58% sized view. (1600 x 1200 - 1.02 MB)

Instrument

Takahashi FSQ-106ED @ f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel.  Shown at 3.64 and 7.77 arcsec/pixel.

Mount

Paramount MyT

Camera

SBIG STF-8300M unguided using AstroDon LRGB filters

Acquisition Data

5/27/2020 Chino Valley, AZ... with CCD Commander & TheSkyx

Exposure

 Lum  24 min. (12 x 2 min. bin 1x1)
 RGB  72 min. (12 x 2 min. Each bin 1x1)

Software & Processing Notes

  • TheSkyX, PixInsight & Photoshop CS6.

  • PixInsight processing includes calibration, CosmeticCorrection,  star registration, comet registration and mean combine, gradient repair and non-linear stretching with HistogramTransformation.

  • Noiseware 5, a PhotoShop plug-in.

  • PhotoShop to create the comet only "CO" image, combining the star registered image with the CO and final touch-up.

Comment

North is to the top.

 

C/2017 T2 (PANSTARRS) is an Oort cloud comet discovered on 2 October 2017 when it was 9.2 AU (1.38 billion km) from the Sun. The closest approach to Earth was on 28 December 2019 at a distance of 1.52 AU (227 million km). The comet's Orbital period is 7 million years.

Source: Wikipedia

 

Above is Coddington's Nebula. Edwin Coddington discovered the "nebula" in 1898. Of course, we now know that this is actually a galaxy and it is cataloged as IC 2574. At a distance of about 12 million light-years, it is vastly farther away than the comet.