10p 20260911 dbartlett

 

_10P_Tempel_TandemRASA11s_asi6200mmP_asi6200mcP_67x180sec_20260911_001639_local_JuneLake_California_USA_DEBartlett
 

 
 

9th Magnitude Comet 10P/ Tempel Less than 17 degrees Off Artificial Horizon Sept 11 2026
 

 
 

ASTROBIN-Full Resolution, animation and other Goodies:
 

https://app.astrobin.com/i/wyji88?r=0
 

 
 

Project Notes:
 

    Tempel2 imaged at less than 17 degrees off artificial horizon. 
    Orbital trail still prominent. 
    Faint twin dust tail,at 11 and 2 o'clock. 
    Brightness measured at mag 8.9 
    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: 4/5  
    Transparency: 8/10  
    Observer: DEBartlett 
    Location: June Lake, California, USA 

 

 
 

Image Info:
 

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

    Resampled 2x2 
    Acquisition...............67x180sec total 
    Resolution ............... 2.504 arcsec/px 
    Rotation ................. 0.311 deg 
    Field of view ............ 3d 12' 26.2" x 1d 59' 15.1" 
    Image center ............. RA: 22 29 16.934 Dec: -35 14 08.45 

 

 
 

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 09 11.28 C 8.9 AG 28.0T 2E760 5.3 ICQ XX BARaeI a180C 5.26mZCP IMX TYT 0 U9*0.25 8.7 2.5s 2.5 Location: June Lake Overlook (MPC U66); Comment: Comet Alt. 17.0
 

 
 

COD U66
 

OBS
 

CATALOG: ATLAS2 - BAND: g (Sun Mag=-26.46)
 

 
 

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

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

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

10P 11/09/2026 06:49:36 12.72 11.98 11.58 11.28 11.06 10.89 121.0 18.1 U66
 

10P 11/09/2026 06:49:36* 0.24 0.24 0.24 0.24 0.24 0.24 32 20.2 ATL
 

 
 

 AFRHO LOG
 

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

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

10P 11/09/2026 06:49:36 0.53 1.48 52.23 11.03 121 552 251 2.742 U66