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Quasar, PMN J1451-1512, Mag 19.14, Redshift (z): 4.76, Light Time: 13.0 Gyr.
I used the Database Power Search in SkyTools 4 Imaging to generate a list of Quasars with a Redshift (z) greater than 4.5 and one of the targets returned was the QSO PMN J1451-1512 in Libra.
This is an image of Quasar, PMN J1451-1512, Mag 19.14, Redshift (z): 4.76, Light Time: 13.0 Gyr taken with my Celestron C9.25 Edge HD and ASI2600MM Duo in Brisbane suburban skies (Bortle 6 to 7) on 28th June 2024.
Celestron C9.25 Edge HD F10 2350mm.
ASI2600MM Duo.
11x5 min exposures.
I have attached a couple of images showing what the Autoguider saw at the native F10 2350mm focal length of the C9.25.
The maximum exposure of theASI220M built-in guide camera sensor is limited to 10 secs by the ZWO software drivers.
I had the back focus set to 146mm as specified by Celestron and the stars in the guider aren’t too bad at F10.
Dennis.
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