8.11.2020

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Sunday 8th 48/44F. Everything in the dome covered in dew. Dew heaters not working. Clear with bright sunshine. White sky towards the sun. Cleared the D-ERF of dew with the hairdrier. The HitechAstro dew heater controller is showing no red LEDs. 12V 5A PS measures only 5V DC on my DMM! I only used the dew heaters a couple of times at half way. 

Astrozap shows they draw a little over 1A per 6" [telescope aperture] band. Perhaps the PS hasn't enough "welly?" The Hitechastro unit is rated and fused at 6A max. The PS and cigar plug are both showing LEDs but not the 4-way control unit.

Seeing is steady and clear. [At last!]

11.08. Tried the 2.6x but it was too much. The thermal agitation has started already. [Internal?] So back to the 2x GPC.

 

 

 

11.11 51/46F 2x GPC.

 

 

 

 

11.29 Experimental 16 bit SER capture instead of AVI.

I usually save from ImPPG in 16 bit .Tiff. But capture in 8 bit Mono in SharpCap.

Something wasn't right.

12.23 I re-tuned the inaccessible etalon. Which I had rotated yesterday to null the off-axis brightness.

12.37 Another re-tune.

12.46 Still tuning.

 

 

 

 

 

 

 

12.46 with a bit of added colour.

 

 

 

 

 

14.35 A white light capture. Vixen 90mm f/10 with Lunt wedge and Baader Solar Continuum filter.  The 2x GPC on the nose of the 174 camera.

 

 

 

 

 

 

15.30 The sun is still visible but the seeing has gone bad. Overall it's been a good day though.

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