Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Solar system body or event
Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021, Paul Macklin
Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021
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Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021

Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021, Paul Macklin
Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021
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Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021

Equipment

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Acquisition details

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Description

This is my first test night on Comet C/2021 A1 (Leonard), which is poised to be a potentially bright comet in December 2021. Looks like the current JPL estimated magnitude is 13.6 (source: https://theskylive.com/quickaccess?objects=cometleonard&data=equatorial-magnitude-time

This test uses a small 60mm APO refractor (ZenithStar 61ii), so this object is now pretty accessible! 

Image processing: 
* Stack in AstroPixelProcessor (use comet registration)
* Light pollution removal in APP
* Crop in photoshop
* Light touch in Topaz
(3/100 remove noise, 3/100 enhance sharpness, 5/100 recover original detail, 5/100 color noise reduction)
* Auto-tone / auto-balance / auto-color in photoshop 

I drizzled every 3 frames during this acquisition. No calibration frames for this feasibility test.

Comments

Revisions

  • Final
    Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021, Paul Macklin
    Original
  • Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021, Paul Macklin
    B
  • Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021, Paul Macklin
    C

B

Description: Nearby stars labeled for comparative magnitude. 13-14 seems close.

Uploaded: ...

C

Description: 60 second un-annotated sub for relative magnitude.

Uploaded: ...

Sky plot

Sky plot

Histogram

Comet C/2021 A1 (Leonard) through a 60mm refractor - October 27, 2021, Paul Macklin

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Comets