Perseus Cluster (Mike Hamende)

Perseus Cluster

First OSC RGB image with the Edge. I decided to move the Mono cam back to the ONTC for some other projects. I'm very much enjoying imaging at 2000mm, it certainly opens up many new potential targets. Imaging at f/10 is definitely challenging noise-wise. I would have preferred to double the exposure time on this target but we all know how that goes.

I'm finding a bit of chromatic aberration in the corners of the image. I've got my backfocus set at 134mm with the ideal being 135.35mm + 0.66mm = 134.01 to account for 2mm filter thickness. I'm not sure if the aberration is coming from a need to tune backfocus, improve focus, or collimation. If you've got any tips please let me know.

I've attempted to upload this image several times before but I'm still dealing with the way Astrobin processes images crushing the blacks and making them darker than the original upload. I've increased shadows a bit to compensate but it seems to be mottling the background. Someday I'll figure this annoying problem out.

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Description: PNG upload test

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Deep sky
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Star trails
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Amateur hosting facility
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Professional, scientific grade data
Mix of multiple sources
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Unknown

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Status	Basic failed
Started	...
Astrometry.net job	8824405
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Perseus Cluster

Perseus Cluster

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Image Index:

Contribution Index (beta):

Perseus Cluster

Perseus Cluster

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Acquisition details

Description

Comments

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B

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