Six and a half sisters

[jsmoraes (Jorge)]

I liked of your M45 (and Orion, too). Despite some problems as strange rig reflection. (I had this problem with my coma corrector, to solve it I need to use a 1 inch extension tube between it and camera). And, really the spikes are very present. I try to reduce them with low ISO. Some people likes them very much, and when not present create them. I see spikes as optical distortion. As I can not eliminate ... I use them to measure focus !

[multiweb (Marc)]

Originally Posted by David Fitz-Henr

Some nice details in the nebula Marc for an OSC / 100 mins even with your problems!

Thanks David. Have you done any imaging lately? Haven't seen any from you in a little while.

Originally Posted by jsmoraes

I liked of your M45 (and Orion, too). Despite some problems as strange rig reflection. (I had this problem with my coma corrector, to solve it I need to use a 1 inch extension tube between it and camera). And, really the spikes are very present. I try to reduce them with low ISO. Some people likes them very much, and when not present create them. I see spikes as optical distortion. As I can not eliminate ... I use them to measure focus !

Thanks Jorge. Yeah these are some little teething issues which I'm still working on. Spikes can be a problem when too many, true. The pleiades are probably the worst to image with a scope that has any kind of spider vanes. I don't know of an effective way to remove them. It's not like blooming that you can get rid of quite easily and reject at stacking time because of the signal's strength. Spikes are sometime fainter than the surroundding nebulosity and quite extended. They should make a spike content aware brush tool in PS to paint them out