Observation by John Bell: Milky Way

Uploaded by

John Bell

Observer

John Bell

Observed

2018 Jul 09 - 23:19

Uploaded

2018 Jul 22 - 16:03

Objects

The Milky Way

Equipment

Sony A7S modded
iOptron SkyStacker

Exposure

80sec f1.4 24mm iso8000

Location

North Cornwall

Target name

Milky Way

Title

Milky Way

About this image

Amazed at the brightness of the milky way from here (invisible from home) Interested in id of the red (H alpha) region above Antares and near delta Oph. Presumably a LBN object.

Files associated with this observation

mw jup marsx.jpg (1.0 MB)

Like this image

Graham Winstanley, Martin Lewis, Nick James, Neil Morrison, David Basey, Callum Potter, Andy Wilson, Alun Halsey, Peter Carson, Nick Hewitt, Mike Scarisbrick, Steve Knight

Comments

Nick James, 2018 Jul 22 - 18:57 UTC

That really is awesome. Is this really a single 80s frame? The reason I ask is the original A7S does strange things to the raw file beyond 30s. In fact, while the A7s is a stunning camera the Sony raw file format is really a pain. What firmware version are you using on the camera?

John Bell, 2018 Jul 22 - 19:49 UTC

Sorry Nick. It is a stack of three subs. All at 80sec. Firmware version is Body ILCE-7S ver 3.20 I think that is an early version of the A7S-1. I've never worried too much about the so called Sony star-eater. It goes deep enough for me, and I routinely expose for 3 or 4 minutes at home.. My version of DSS stacker doesn't accept Sony raw files. I convert to DNG in order to stack.

Nick James, 2018 Jul 22 - 20:55 UTC

John - Yes that's the firmware version in mine. I think the raw star-eater problem got worse with the mark 2 body. Anyway, it certainly didn't have any bad effect on this image which is really stunning.

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