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BAA Images Ron Palgrave

Observation by Ron Palgrave : MERCURY JUNE 2018

Uploaded by

Ron Palgrave

Observer

Ron Palgrave

Observed

2018 Jun 26 - 17:58

Uploaded

2018 Jul 29 - 21:02

Objects

Mercury

Equipment
  • MEADE LX200GPS 14INCH
  • ASI224MC-S
  • NEAR IR FILTER 685NM
  • 2 BARLOW
Exposure

0.43ms

Location

STANLEY,NORTH EAST ENGLAND

Target name

Mercury

Title

MERCURY JUNE 2018

About this image

For a couple of years my Mercury images have been little more than fuzzy blobs. But after many failures I seem to have finally found a route to sucessful feature capture. 1)For my location,imaging conditions seem most suitable in late afternoon with the Sun still up.The effect,of increasing air mass seems to be offset by better contrast. 2) Filtering to near-infrared seems to stabilise the image somewhat. 3) Capturing 300,000 -frames or more, but only stacking 1% seems to work. 

In this image, the white spot near the limb is the crater Kuiper. It will move out of view as the planet comes round to inferior conjunction.I show the appropriate WINJUPOS representation for comparison. 

In establishing my process flow, I was helped a great deal by studying the prior observation notes of C. Hooker and S Kidd, I thank them both.

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Comments
Chris Hooker
Chris Hooker, 2018 Aug 04 - 07:54 UTC

Hi Ron,

That's a nice result, and I'm pleased that you found my notes on technique useful. It's good to see that other observers are benefiting from my experience and capturing detail on Mercury.

However, I think that you have stated the orientation incorrectly. On June 24th, Mercury was about 19 degrees east of the Sun, so the terminator would be on the left-hand side in the north-up view. This doesn't detract from the quality of your image, of course.

Best regards,

Chris

Ron Palgrave
Ron Palgrave , 2018 Aug 12 - 19:50 UTC

Yes you are correct. The brain fade of age!  Your observations were my inspiration to pick up the mercury challenge again, so thanks.  I need to better understsnd your constraint  regarding proximity to the sun

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