a Comet Elements
Comet 6P/d'Arrest

2015/07/17 20:09:33(UT)
Toshihiko.Tanaka(Sky90 f=410mm) cF


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/12/26 10:20:00(UT)
Toshihiko.Tanaka(130mm refractor) cF


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/12/19 10:20:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/11/19 11:25:00(UT)
Toshihiko.Tanaka(130mm refractor) cF


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/10/01 11:35:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/09/22 12:05:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/09/08 13:30:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/08/21 13:55:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/08/03 13:58:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/07/30 13:10:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/07/25 14:15:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/07/11 13:10:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
Od ɉ@cF
2008/06/30 01:38:00(UT)
David Arditti (280mm SC)
I thought this comet would be reasonably easy, since it is mentioned in "Sky at Night" magazine as varying from mag. 12 to 10 over July, but in fact it is astonishingly faint, if I have got the correct object, which I think I have, as it is right on predicted position.
I can't easily estimate the magnitude as it is below the limit of TheSky6, mag.16. I compared the view with the Digitised Palomar Sky Survey, which goes down to 19, and it is comparable with faint stars in that, so it seems to be about mag. 18. These were taken with a CLS filter, but the unfiltered image was similar, but noisier.

[David Arditti: Edgware Middlesex HA8 5LW: United Kingdom]
Comet Section