10p 20260815 dbartlett

 

_10P_Tempel2_TandemRASA11s_asi6200mmP_asi6200mcP_52x240sec_20260815_014244_local_JuneLake_California_USA_DEBartlett
 

 
 

Still Consistent Nearly Two Weeks After Perihelion and Earth's MOID, Comet 10P/Tempel on Aug 15 2026
 

 
 

ASTROBIN-Full Resolution, animations and other Goodies:
 

https://app.astrobin.com/i/n3qfcp?r=0
 

 
 

Project Notes:
 

    Catching up on last month's data. 
    Max Altitude from Horizon 21 degrees. 
    A little less than two weeks after perihelion and Earth's MOID. 
    Same-Same, subjectively beautiful. 
    From August 15 orbital trail clearly present in subframes . 
    Dust tail extending to the 2 o'clock pos. 
    Measured brightness at 7.8 mag without suitable comp. stars. 
    As usual, color calibration was performed with PixInsight's SpectrometricColorCalibration process using a white balance of the spectral class of our sun as reference. 

 

 
 

Observational details:
 

    Backyard setup 
    2xscopes Tandem: RASA11 D = 279mm; fl =620mm; F# 2.2 
    camera: asi6200mmP and asi6200mcP 
    Seeing: 3.5/5  
    Transparency: 7.5/10 
    Observer: DEBartlett 
    Location: June Lake, California, USA 

 

 
 

Image Info:
 

(All images processed solely using PixInsight and Comet Photometry Tycho-Tracker)
 

    Resampled 2x2 
    WideField 
    Acquisition..............52x240sec total 
    Resolution ............... 2.504 arcsec/px 
    Rotation ................. 0.124 deg 
    Field of view ............ 2d 39' 17.6" x 1d 32' 58.8" 
    Image center ............. RA: 22 05 47.625 Dec: -30 04 45.84 

 

 
 

10P (Tempel 2)
 

ICQ line:
 

IIIYYYYMnL YYYY MM DD.DD eM/mm.m:r AAA.ATF/xxxx /dd.ddnDC /t.ttmANG ICQ XX*OBSxxf InT APERTURcamchip SFW C ## u.uu xx.x PIXELSIZE
 

 10 2026 08 15.31 C 7.8 AR 28.0T 2D320 7.1 45.7m306 ICQ XX BARaeI a240C 7.09mZCP IMX TYT 0 U9*0.16 10.1 2.5s 2.5 Location: June Lake Overlook (MPC U66); Comment: Comet Alt. 20.5
 

 
 

COD U66
 

OBS
 

CATALOG: ATLAS2 - BAND: r (Sun Mag=-26.93)
 

 
 

 10x10 20x20 30x30 40x40 50x50 60x60 RSR FC COD
 

COMET UTC +/- +/- +/- +/- +/- +/- N FWHM CAT
 

------------ ------------------- ----- ----- ----- ----- ----- ----- ---- ---- ---
 

10P 15/08/2026 07:23:26 11.33 10.70 10.34 10.08 9.89 9.73 157.2 17.8 U66
 

10P 15/08/2026 07:23:26* 0.16 0.16 0.16 0.16 0.16 0.16 18 21.4 ATL
 

 
 

 AFRHO LOG
 

COMET UTC DELTA r AP " MAG RSR CM +/- AFRHO OBS
 

------------ ------------------- ----- ----- ----- ----- --- ----- ---- ----- ---
 

10P 15/08/2026 07:23:26 0.42 1.43 64.88 9.67 157 754 218 2.877 U66