Observation by dbartlett: Project Notes: 98% moonlight? ...

Uploaded by

BAA Comet Section

Observer

dbartlett

Observed

2026 Jul 28 - 00:00

Uploaded

2026 Sep 06 - 09:13

Objects

10P Tempel

Planetarium overlay









Constellation

Capricornus

Field centre

RA: 21h43m
Dec: -22°47'
Position angle: -1°32'

Field size

3°07' × 1°47'

Full filename

10p/10p_20260728_dbartlett.png

Target name

10P Tempel

Title

Project Notes: 98% moonlight? Beat it with shorter exposures. Loss of fainter IFN and comet details of course. I did once again block the direct moonlight by hiding the moon behind my cabin. Globular cluster Messier M30 is closer to the Comet's orbital trail.. Orbital Dust Trail fainter due to moonlight yet still be visible. Brownish-yellow dust tail difficult to see however appears to be a large diffuse smudge along and below the right side orbital trail (best seen in the inverted color starless image https://app.astrobin.com/i/fhaed3?r=E). Brightness measurement is mag 9.1 under heavy moonlight. Observational details: Backyard setup 2xscopes Tandem: RASA11 D = 279mm; fl =620mm; F# 2.2 camera: asi6200mmP and asi6200mcP Seeing: 3.5/5 Transparency: 7/10 98% Moonlight Observer: DEBartlett Location: June Lake, California, USA Image Info: (All images processed solely using PixInsight and Comet Photometry Tycho-Tracker) Resampled 2x2 Acquisition...............377x30sec total Resolution ............... 2.502 arcsec/px Rotation ................. -1.560 deg Field of view ............ 2d 57' 41.8" x 1d 47' 6.6" Image center ............. RA: 21 43 42.862 Dec: -22 47 24.1 _._,_._,_

About this image
Project Notes: 98% moonlight? Beat it with shorter exposures. Loss of fainter IFN and comet details of course. I did once again block the direct moonlight by hiding the moon behind my cabin. Globular cluster Messier M30 is closer to the Comet's orbital trail.. Orbital Dust Trail fainter due to moonlight yet still be visible. Brownish-yellow dust tail difficult to see however appears to be a large diffuse smudge along and below the right side orbital trail (best seen in the inverted color starless image https://app.astrobin.com/i/fhaed3?r=E). Brightness measurement is mag 9.1 under heavy moonlight. Observational details: Backyard setup 2xscopes Tandem: RASA11 D = 279mm; fl =620mm; F# 2.2 camera: asi6200mmP and asi6200mcP Seeing: 3.5/5 Transparency: 7/10 98% Moonlight Observer: DEBartlett Location: June Lake, California, USA Image Info: (All images processed solely using PixInsight and Comet Photometry Tycho-Tracker) Resampled 2x2 Acquisition...............377x30sec total Resolution ............... 2.502 arcsec/px Rotation ................. -1.560 deg Field of view ............ 2d 57' 41.8" x 1d 47' 6.6" Image center ............. RA: 21 43 42.862 Dec: -22 47 24.1 _._,_._,_
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