Mak-Newt on EQ6 vs CPC800 with Hyperstar

[Theinvoker]

Yeah they are more than the OTA and mount lol. That's definatly going to have to be a one for the future, dont think telling the Mrs I'm spending an extra 2 grand on one would bode too well for my health 8)

[narrowbandpaul]

you can do low res spectroscopy at 1nm pr pixel approx with the star analyser grating...they come in 100lines/mm and 600lines/mm....they are 1.25" and fit just like a filter...they are seeing dependant, but from a decent site you will find it fine. we did it from the centre of glasgow through a terrible scope at the uni obs.

star analyser is sold in the UK

after calibrating you spectrum, you require filter curves (transmission vs wavelength for UBVRI)....the add up under the response curve (integration) and hey presto....filter photometry without a filter

thats what ally and I did