Observation by Duncan Hale-Sutton: Z Ursae Majoris near current peak of lum...

Uploaded by

Duncan Hale-Sutton

Observer

Duncan Hale-Sutton

Observed

2023 Apr 02 - 20:36

Uploaded

2023 Apr 04 - 21:58

Objects

Variable star

Equipment

Celestron NexStar 102SLT
Nikon D90 DSLR
Sky-Watcher HEQ-5

Exposure

9x30s at ISO1600

Location

Neatishead, Norfolk

Target name

Z Ursae Majoris

Title

Z Ursae Majoris near current peak of luminosity

About this image

Variable star Z Ursae Majoris is currently approaching a peak in its luminosity of visual magnitude 7. This image comprises 9x30s (ISO 1600) taken on the 2nd April when the moon was in the sky and four days from full. I have rotated and cropped the image so that it is similar to the AAVSO chart X28625AEL and I have marked Z and two other stars labelled on the chart (84 - V magnitude 8.4 and 99 - V magnitude 9.9). This is a direct RGB image and so Z will appear much brighter than its V magnitude would imply because of its red colour.

Files associated with this observation

Z UMa 2023-04-02 20-36 UT.jpg (185.1 kB)

Like this image

Dr Paul Leyland, Callum Potter

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