Observation by David Swan: AG Dra: spectrum

Uploaded by

David Swan

Observer

David Swan

Observed

2018 May 10 - 20:42

Uploaded

2018 May 10 - 22:37

Objects

Spectrum

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Constellation

Cetus

Field centre

RA: 03^h05^m
Dec: +04°03'
Position angle: -179°09'

Field size

0°06' × 0°03'

Equipment

200mm SCT @ f/6.3
ASI183MM
StarAnalyser100
FireCapture, PIPP and RSpec

Exposure

14 x 10s

Location

Tynemouth, UK

Target name

AG Dra

Title

AG Dra: spectrum

About this image

The y axis is intensity. This is uncorrected for instrument response. The plan is to normalise this and following spectra to the local continuum, and then to see over time whether the relative heights of the peaks change as the system evolves.

I've also come up with a method for stacking the TIFFs or FITS containing the spectrum in RSpec, avoiding the need to create a video with the accompanying loss of bit depth. The workflow is:

Use PIPP to align the TIFFs on the zero order star image and then output TIFFs again. Then open the TIFFs sequentially in RSpec with averaging turned on.

Files associated with this observation

agdraspec10may2018.png (10.0 kB)

Like this image

Jeremy Shears, Graham Winstanley, Chris Hooker, john simpson, Andy Wilson, Dawson, Peter Carson

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