Observation by Martin Lewis: Venus in IR

Uploaded by

Martin Lewis

Observer

Martin Lewis

Observed

2017 Feb 18 - 17:02

Uploaded

2017 Feb 19 - 23:25

Objects

Venus

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Constellation

Reticulum

Field centre

RA: 04^h34^m
Dec: -62°08'
Position angle: +179°38'

Field size

0°08' × 0°08'

Equipment

444mm Dob
ASI174MM
Astronomik 807nm filter

Location

St Albans

Target name

Venus

Title

Venus in IR

About this image

Files associated with this observation

Venus_IR_2017-02-18_17-02UT_MLewis.jpg (100.0 kB)

Like this image

Dawson, David Basey, Jeremy Shears, Peter Carson

Comments

Dawson, 2017 Feb 20 - 07:22 UTC

Martin, I think this is a great image. How many frames are in the final image? Do you find the ADC easy to use and do you think it makes much difference when using an IR let through filter? One of the coming tutorials for the website is going to be Damian Peach's article on atmospheric dispersion and atmospheric dispersion correctors.

Martin Lewis, 2017 Feb 20 - 21:18 UTC

Thanks James,

This was 6% of 34.5k images each at 5.5msec.

I regard an ADC is essential equipment for planetary imaging when the planets are lower than 45° and generally just leave it in place for all my imaging. Proabably with the 807nm filter it will have little benefit but for me it is more trouble to remove it than keep it in. Certainly not having it in place for one-shot-colour imaging of nearby Mars or Venus in UV would be a big mistake. I am so used to the ADC now I find it no trouble to use. Looking forward to reading Damian's article

Martin

Dawson, 2017 Feb 26 - 12:30 UTC

Damian's article has just been published on the website: https://britastro.org/node/9058

James

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