First Light - WO Star 71 Dual Rig - Leo Triplet (Steve Milne)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: M 65 · M 66 · NGC 3593 · NGC 3623 · NGC 3627 · NGC 3628 · The star 73Leo

First Light - WO Star 71 Dual Rig - Leo Triplet, Steve Milne

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First Light - WO Star 71 Dual Rig - Leo Triplet

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First Light - WO Star 71 Dual Rig - Leo Triplet

After much wailing and gnashing of teeth, we have finally been able to get our dual rig up and running. The rig consists of two William Optics Star 71s - one is a Mark I (5 element) and the other is a Mark II (4 element). They have identical focal length and FOV. Cameras are a Moravian G2-8300 and an Atik 383L. Filters are Baaders. The rig sits on top of a new SkyWatcher EQ6-R. The object chosen was somewhat random - the Leo Triplet - just to check everything was aligned, orthogonal and so on. This was, in hindsight, not the best choice since the Triplet soon started dipping into the light polluted part of my sky. I got only a hint of the tidal tail - possibly because of the LP, possibly because I stuck (mostly) to 5 minute exposures as I was testing the rig. On the second night I did get some 15 minute luminance exposures, but I did not get sufficient (I think) to bring out the tail.

I am grateful to Sara Wager on two counts. Firstly, she talked me into keeping the faith with the Star 71s (I was going to get an Esprit 80 and work around the different FOVs). Secondly, she suggested I try the (relatively inexpensive) EQ6-R (I had been thinking about an Avalon).

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Description: Better star control

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First Light - WO Star 71 Dual Rig - Leo Triplet

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