Okay here they are warts and all! I've stretched some of them a bit so they are visible, but no colour modifications. I also shoot through an Orion field flattener. Basically it's mandatory on all refractors, APO, ED or achro so the field curvature we see visually is just about free of it on photos. All but 2 of these shots (Eta Carina and IC2944 are unfiltered). Maybe M46 had the Baader Sem-Apo on as well. It doesn't do much to CA photographically.
First is Mimosa and the Jewel box single frame. Photographically the CA is a bit too much to handle without a filter.
Corona Australis. This is actually a stack of frames which does not affect the CA. I also found the CA too much to handle unfiltered like this. The stars are a pretty blue / white normally.
M45 a single frame. This was a disaster of CA. All the stars in the field are way too bright to manage the CA.
Comet Lovejoy. The CA is manageable, especially once the stars are trailed. The SW 120 F5 is a great comet scope.
M46 single frame. Lots of CA, some heavy processing got rid of most of it (not shown).
47 Tuc. A field full of faint stars this one took minimal processing to make for a nice shot. Here it is unprocessed other than a bit of a stretch.
Eta Carina. This is through a CLS filter. The CLS greatly reduces CA as well as enhances nebula. There is some amp glow in the top left corner.
IC2944 Running chicken. A single frame. I thought the CA was pretty bad on this one in spite of the Baader Semi-Apo filter. Heavy camera amp glow in the upper left corner.
Edit, the order is messed up sorry.
1. Mimosa and jewel box.
2. M46.
3. M45
4. IC2944.
5. Eta Carina.
6 Corona Australis.
7. Comet Lovejoy.
8. 47 Tuc.
Last edited by cometcatcher; 15-02-2014 at 11:33 PM.
Reason: oops forgot the pics!
|