Eta Carina. De-forked ETX-125

[Nojy (John)]

Still Getting my setup sorted out.
My ETX has been sitting in a corner whilst I have been playing around with a wide field setup.

I have a de-forked etx 125 on a eq5 mount with guide scope and a home made 2inch visual back. Imager is a Fujifilm XT1.
This is a stack of 70, 1min subs stacked with "Siril"
This one looks pretty nice to me.
I haven't posted in years, probably 13, so I'm not sure what I'm doing, but the preview looked ok.

hope you like it.

John

[Mickoid (Michael)]

Interesting return from a long absence and using a scope not many have seen here. I managed to purchase an ETX90 for $40 last year off Gumtree and gave it to my daughter as her first telescope. I wish it had been the 125 but the 90 is still an amazing scope with sharp optics. You've done well to get this result at f15. I like the natural colours your shot has produced and obviously this result would have been near impossible if the scope had remained on the forked mount. I managed some nice planetary shots on the Meade mount but the plastic gears would have be useless for long exposures. Nicely done John.

[Nojy (John)]

Yes, only bright objects for this guy.

I've included a pic of how my setup currently looks.
It tends to evolve. as I cobble things together.
The new back is made from a Bintel SCT to 2inch adaptor that has been "press fitted" to a disk of 6mm aluminium. I have a Mini lathe and Mill so was able to do this myself, it does require some thought and time as the large hole has to be precise for the press fit to work.

[Dave882 (David)]

Very nicely done! Picking up some lovely detail there. Quite a challenging fl indeed for deep sky but looking good

[JA]

Originally Posted by Nojy

I have a de-forked etx 125 on a eq5 mount with guide scope and a home made 2inch visual back. Imager is a Fujifilm XT1.
This is a stack of 70, 1min subs stacked with "Siril"
This one looks pretty nice to me.

It looks pretty nice to me too John.
Also, as an unmodified camera, using the Fuji you get considerably better Hydrogen Alpha transmission of ~45% compared with that of the other usual DSLR suspects which are in the ~20-30% range, so that your 1 minute exposures collect as much Hydrogen Alpha on the sensor as the typical unmodified DSLRs* approximately 1.5 minute exposure.

Best
JA

* That's strictly for DSLRs and some mirrorless for which I've seen the camera's spectral response data. I'd love to see the data for the current unmodified Nikon and Canon mirrorless cameras as some of the pics that I've seen for the Nikon Z series look particularly rich in colour, although that could also be someone heavy on the saturation/vibrance.

[kosborn (Kevin)]

I like your image! Particularly if you've just come back from a 13 year absence. Unfortunately it seems I accidently copied your image, even down to the angle. Your focal length suits the framing much better than mine though!