Hi Geof,
Thanks for the advice. Happy to hear from another Mewlon owner
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I have theTak flattener/reducer and the rings/mountplate etc as well.
The Mewlon focuser on ours should be the same manual electric focuser so I am not sure what you are reffering to here?? I didnt think there was a automated electric focuser available for the Mewlon's??
I am trying to stay away from an external additional guide scope and stay with a selfguided/OAG system but if most of the experienced astrophotographers reckon this is the only feasible way then I may have to look at going down that path.
Cheers
Quote:
Originally Posted by loc46south
Hi - Just a bit of advice. Before you leap in and buy a camera decide on what you want to do - the M250 is a great imaging scope but it has it's limitations - I know - I bought one and have spent the last 4 months setting it up and getting it ready for imaging. In it's native form (f12) it's a great planetary scope but not much good for DSO imaging as it's too slow. At f12 with a SBIG ST8 it produces a realitivly flat field (Flatter than a C9.25)(I've got one of those as well) but with the larger format cameras you are going to get curvature. The new CR reducer/flattener for the Mewlons works like a dream - it gives a dead flat field and small tight stars on a ST83000 but at f10 it is still a very slow system. I have the reducer 7.2 but I am still waiting for adapters to arrive from USA so I have no definitive testing on that yet but I expect that being Takahashi it will perform to specs and is probably your best imaging solution. The biggest problem encountered is back focus (Metal back distance) - The internal focuser is not ASCOM compliant so if you intend to automate your focusing then you need an external electronic focuser. I have opted for the Mewlon 250S which uses the external rings and I have direct bolted mounting rings for a SkyWatcher ED100 (F9) which I use as a guide scope - I have replaced the S/W focuser with a Moonlite focuser to get the slop out of the system and it guides without any sign of flexure. Mount used is a G-11 Gemini - So I say again plan your imaging system carefully before buying any camera - there is a lot more you need to do and spend before you have a functional imaging set up.
Geof
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