Jupiter Jan5 2016

[ags_]

One small patch of good seeing for a CH4-18nm but poor for the rest including the RGB, there's always tomorrow which is one of the best attributes of this hobby!
Regards, Phil

[RB]

Again, very nice shot Phil.

RB

[Quark]

Nice work again Phil, wicked CH4.

Cheers
Trev

[prokyon]

Great images! CH4 is very interesting, maybe I will buy this filter anytime.

[strongmanmike]

I'd say that unconventional mirror of yours Phil is working mighty fine :thumbsup:

Mike

[ags_]

Thanks very much all, if anyone is interested in buying a CH4 filter I would recommend at least 18nm wide unless you have a +16" mirror and are prepaid to wait for excellent seeing. I have just ordered one from ZWO for my 14" and at $99 it seems a fairly good deal it is 20nm wide. My previous ones were $650US 18nm & $395AU 8nm which is rather excessive I think.
Re the 20" Fullum Tech mirror. They are becoming more popular because of their thermal equilibrium properties, my addition of a central hole in the base for air flow (Bird's invention) is the unconventional bit and well worth the extra work. I mostly leave the mirror fan running even when imaging as so far I have not noticed any adverse effects, near perfect seeing may be the only way I can see if there are any micro vibrations.

[MarkJ]

Thank you Phil for your CH4 filter recommendations. It seems the ZWO one is suitable to both my 12" and the wallet :-)

Best regards,
Mark