I'm coming to the conclusion that it may have been a brightening of the NIR star IRAS 14336-6040. This would go some way to explaining the slightly larger (out of focus?) red stellar image.
(I was using a FULL spectrum modded Canon D1000 on an ED80.)
Hi Ken, I imaged this field every night from 02 to 06 April and there was nothing showing at the co-ordinates you gave down to around mag 12.5. I missed the next two nights but tonight I imaged the field a bit more deeply and there's nothing showing down into the mag 14s.
However, I can't reconcile your co-ordinates with the image you posted, the stars don't seem to match up. In fact I can't really fathom what your field is - could you supply a scale & north arrow? Thanks.
Yeah, got it Ken, something faint there, probably around 13.3 - 13.4 ~V. 10:52, 09 Apr 2018 UT, DSLR & 200mm lens, 5 x 15 sec, ISO 6400, F/6.3. Huge extinction at that location! On 6 Apr it's under a diffraction spike. On 5th April, something at limit of detection is visible at the location (55mm lens, limiting mag ~12.5). Earlier shots are indeterminate. Tonight's image attached.
Rob,
Thanks very much for adding that very useful data.
Simbad gives a 5.46 mag in the J band (1.05 - 1.34 micron) - this is a bit of a stretch for the Canon - The Full Mod, both internal filters removed.
This does allow recording to at least 8000A, where the 2nd order spectrum kicks in.