IC 5146 & IC 405: Narrowband Test with Starizona SCT Corrector III
10/21/2024 -- Clear skies but a big moon (79%) coming up at 22:30 motivated an experiment with the dual narrowband (Ha/OIII) filter on the LX10 with the Starizona SCT Corrector III and the Svbony 405cc. Seeing forecast from cleardarksky for 10/21/2024 showing clear skies, good transparency but bright moonlight. Seeing forecast for meteoblue showing similar trends. Spend 1.5hr polar drift aligning... painful...back and forth. Then spend 30 minutes on focusing...with the dual narrowband filter in place. Then searched for bright nebula still visible despite trees from the back deck. Settled on IC 5146 (Cocoon Nebula). Started the internal autoguider... which calibrated fine...and began 180s test image. Created a job in the Indi/Ekos scheduler for IC 5146 with 180sx20 at 5C, gain of 285 and offset 32 in a sequence file to repeat until 05:30. Promising initial result -- one light frame (180s x1) with gain 285, offset 32, temp at 5c stretched in the Indi/Ekos FITS viewer. Collection of ligh