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Author Topic: White light solar at 670mm, 1340mm and 6700mm (oh yes, using OSX ExampleApp)  (Read 2112 times)

NickK

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After being tempted to by a 5x Televue Powermate by Mrs Nagler herself at Astrofest it was sunny on sunday.. so here's the Titan doing solar with solar film. Scope 105mm pentax.

These are all SINGLE images (no stacking or drizzling this time) using the OSX ExampleApp to capture. Poor old EQ6 had it's work cut out at 6700mm! Rock solid but bubbly atmosphere.
« Last Edit: February 20, 2014, 05:32:44 PM by NickK »
ATIK 383L+, Titan, 16IC, EFW2, OAG | Pentax 105SDP | NEQ6
Author of the ATIK OSX Drivers and AOSX - Astronomy on OSX

NickK

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Re: White light solar at 670mm, 1340mm and 6700mm (oh yes)
« Reply #1 on: February 20, 2014, 05:17:19 PM »
This is 1340mm with the TV power mate 2x.
ATIK 383L+, Titan, 16IC, EFW2, OAG | Pentax 105SDP | NEQ6
Author of the ATIK OSX Drivers and AOSX - Astronomy on OSX

NickK

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Re: White light solar at 670mm, 1340mm and 6700mm (oh yes)
« Reply #2 on: February 20, 2014, 05:18:12 PM »
Finally with the 2x and 5x stacked.. 6700mm f63.8!

Note the dust motes.. this was the first image captured - I cleaned after!
ATIK 383L+, Titan, 16IC, EFW2, OAG | Pentax 105SDP | NEQ6
Author of the ATIK OSX Drivers and AOSX - Astronomy on OSX

ReedDower

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After being tempted to by a 5x Televue Powermate by Mrs Nagler herself at Astrofest it was sunny on sunday.. so here's the Titan doing solar with solar film. Scope 105mm pentax.

These are all SINGLE images (no stacking or drizzling this time) using the OSX ExampleApp to capture. Poor old EQ6 had it's work cut out at 6700mm! Rock solid but bubbly atmosphere.
Nice try but still the pic is not clear one..There could be much improvement.

NickK

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  • Posts: 249
After being tempted to by a 5x Televue Powermate by Mrs Nagler herself at Astrofest it was sunny on sunday.. so here's the Titan doing solar with solar film. Scope 105mm pentax.

These are all SINGLE images (no stacking or drizzling this time) using the OSX ExampleApp to capture. Poor old EQ6 had it's work cut out at 6700mm! Rock solid but bubbly atmosphere.
Nice try but still the pic is not clear one..There could be much improvement.

Very true; for many reasons:
a) Running at 6700mm the scope with the Titan results in 0.23 arcsec/pixel (f64). This is below Pentax's stated 1.1 arc sec defraction limit.
b) It is a single exposure, not a run of 1000 processed and stacked in registax
c) Manually focusing using the Pentax 1:1 focuser and then Borg helical becomes difficult
d) Using unguided, unaligned EQ6 at 6700mm is asking for a bit of blur
e) Capturing at low elevations is more prone to atmospheric disturbance

ATIK 383L+, Titan, 16IC, EFW2, OAG | Pentax 105SDP | NEQ6
Author of the ATIK OSX Drivers and AOSX - Astronomy on OSX