Deep Eta carina with Bert's lens

[tornado33]

Hi
I managed to combine a deep hydrogen alpha image,(baader 7Nm filter) using it to replace the red channel of a colour UHCS filtered image, both taken through Bert's lens earlier in the year. Full size version here.
http://www.iceinspace.com.au/uploads/etacar300mm2x5minsiso400uhcs%20harg b.jpg
Both taken with Bert's 300mm f2.8 flourite lens.
Scott

[atalas]

Nice work Scott !

[h0ughy]

cloudy last night Scott????? nice reprocessing mate

[rogerg]

That is an excellent shot, I particularly like the soft contrast with lots of nebulosity.

Roger.

[avandonk]

Looks really nice Scott. In the early days I used to use the dark patch with three stars to see if I was in focus (see pic below). Is there any facility for image enhancement in Iris such as Richardson Lucy? The picture below was run through IP RL enhancement and even though its a jpg improved markedly. this is also a good way to show up any noise that is present..
Every time the Moon starts interfering I think I should get a H Alpha filter.

Is the filter(s) in square to the optic axis or is the Canon T-mount I araldited to the retaining ring not quite square as there seems to be a slight what looks like astigmatism but is not as it is in one direction over the entire field. This is symtomatic of a slight misalignment some where. Easy enough to test just take two pictures with the camera rotated at 0 and 180 degrees. Like most things it is only just apparent if you zoom right in. In the industry it is called pixel peeping I believe and I am guilty of it.

Again very nice picture. I am still amazed you still manage such quality while guiding manually.


Bert

[tornado33]

Thanks all:)
Actually, yes there is richardson lucy deconvolution and a host of other functions in Iris Ive yet to discover, I tried the richardson lucy on some small planetaries, it sharpened them up a little, but takes forever to do large areas, best to crop around the small object.
Guiding with your 300mm lens is a pleasure, because of the fast FL meaning exposures dont have to be as long, and I can do so while seated. With the 10 inch the FL is 1400mm, far less forgiving of guide errors, and often have to guide for up to 20 mins at a time while standing.
If I won lotto an order for a Losmandy Titan, and Sbig guide camera would be placed, and from then on Id always get the sharpest possible pictures from a 10 inch scope :) Id then do super deep imaging sessions of several nights on one object. A pet wish would be to image a single area 1/2 hour exposures exposures, 8 hours each night over 5 nights, for a total of 40 hours of imaging (80 separate exposures) stack them and see how deep I can go.
Scott

[Octane]

Scott,

That is truly astounding.

Well done.

Regards,
Humayun

[iceman]

Wow! Now why can't it look like that through the eyepiece!

Stunning result Scott.