Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1795  ·  LBN 645  ·  LBN 646  ·  LBN 647  ·  LDN 1359  ·  NGC 896
Fish Head Nebula, Mike Hamende
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Fish Head Nebula

Fish Head Nebula, Mike Hamende
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Fish Head Nebula

Equipment

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Acquisition details

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Description

I had been flirting with the idea of getting an EdgeHD 8 for a while but they've been out of stock everywhere for quite a while.  I don't remember exactly how I found it but I stumbled upon an open box, like new EdgeHD on B&H photo and before I even knew what was happening I ordered the scope.  Many people people have reported issues with chromatic aberration when using the reducer with this scope so I decided I would go without for the time being. 

While using the scope for the first time I was plagued with oval stars even with 1 second exposures.  I eventually discovered that the fan in my ASI2600MM was very poorly balanced leading to vibration in the imaging train.  I replaced the fan and mounted it with silicone vibration isolators and now all is well.  The fan replacement also improved the guiding from 0.8" down to 0.4" RMS with decent seeing.  

It is a relatively short integration due to weather but imaging at f/10 is not nearly as bad as I would have thought, and I didn't even bother taking flats with this "evaluation" run.

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Fish Head Nebula, Mike Hamende