Saturday, December 07, 2019

imaged CTA 102 (Halifax)

I asked the Burke-Gaffney Observatory to image the quasar CTA 102.

This object is in the constellation Pegasus. This quasar, also known as Q2230+0114, is not particularly far... But in 2016 it apparently had an outburst, changed in brightness in 2016. I learned about this is an article at Sky & Telescope magazine.

Thought I'd have a look. I aimed at the star GSC 01154-0584.

quasar CTA 102 in luminance

Luminance only, 20 seconds subexposures, 10 stacked shots. FITS Liberator, Paint.NET. North is up; east is left.

SkyTools 3 Pro says the quasi-stellar object has a redshift (z) value of 1.04 with a light time of 6.8 Gyr. The magnitude is 17.3. It is just west of the star J223239.8+114348. It is slightly brighter than this star which ST3P says is mag 17.9. Up and right of the tiny Delphinus-like pattern.

There are some fuzzies in this image.

West of the quasar, the brightest galaxy in the frame, is NGC 7305. The software shows a very small object here but it seems quite large to me, a large oval oriented north-south. It shows a bright core. Looks like an elliptical.

To the north-east is a very small wisp, extended slightly north-south. This is galaxy LEDA 1398097.

There are some intriguing star groupings in the field...


Wikipedia link: CTA-102.

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