Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  California nebula  ·  NGC 1499  ·  The star 50Per  ·  The star ξPer
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NGC1499 - California Nebula - 20190220 - Ha - 18-55, altazastro
NGC1499 - California Nebula - 20190220 - Ha - 18-55
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NGC1499 - California Nebula - 20190220 - Ha - 18-55

Getting plate-solving status, please wait...
NGC1499 - California Nebula - 20190220 - Ha - 18-55, altazastro
NGC1499 - California Nebula - 20190220 - Ha - 18-55
Powered byPixInsight

NGC1499 - California Nebula - 20190220 - Ha - 18-55

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Description

Not a really nice picture and surely an heavily processed one, but it is a tribute to the high sensitivity of the ZWO ASI 178MM camera, considering that it was obtained with an overall exposure of just 30 minutes under a rather hazy sky and with a nearly full moon. Even more important, the lens was the cheap "kit lens" 18-55 mm zoom that comes with many entry level Canon DSLRs. These shots were taken at 55 mm F 5.6, which means the aperture was less than 10 mm in diameter! A simple 80 mm refractor collects about 64 times more light. Probably decisive in obtaining anything at all with such a setup in such conditions, was the use of two filters in tandem, an old Meade IR cut which came with the DSI Pro and a modern day Astronomik IR Pass 642: together they give an (almost) narrow band filter, about 35 nm wide, centered around the H alpha line.

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NGC1499 - California Nebula - 20190220 - Ha - 18-55, altazastro