J142926.5+011954 (BTC40 J1429+011) is a Quasar with a Redshift (z) 4.84 and Light Time 13.0 Gyr, at Magnitude: 19.40 I (in the IR).
On the 7th June 2025, with a 90% Moon only 20 degrees away, I decided to fit a Baader IR-Pass Filter (685nm) to see if I could record this somewhat faint, distant Quasar from suburban Brisbane.
I think that I succeeded.
The off-axis guide stars on the guider chip of the ASI 2600 MM Duo were a little elongated due to the off axis coma in the Mewlon 210, but I had no issues guiding 10-minute (600 sec) subs.
Mewlon 210 F11.5, Tak x0.8 RF, ASI2600MM Duo camera.
18x600 sec exposures.
Paramount MX+.
I used the SIMBAD website to locate a PanSTARRS DR1 z image from CDS Portal Strasbourg showing the field and I am reasonably confident that I managed to record this distant Quasar.
SIMBAD indicated the following brightness details:
B 24.55
V 22.53
G 20.579714
r (AB) 21.121
i (AB) 19.731 (I is centred on the 800nm band)
- Image #1 shows the full FOV with a severe gradient due to the nearby almost full Moon.
- Image #2 shows a full res 1280x960 crop from the centre with the red circle marking the Quasar.
- Image #3 shows the inset from PanSTARRS DR1 z image identifying the position of the Quasar.
Dennis.
