A rare thing happened on February 11, it fined up for a few hours at night. Must have been for my birthday.
But what to do with a 3/4 moon in the sky.
Shoot the moon? Nah. Let's experiment with deep sky.
Over in the big boy's toys forum section there's some really lovely Bi-Colour shots so thought I'd have a crack at that using an achro refractor, some string, garbage bag, glue and duct tape.
I have a Ha filter but not an OIII. To simulate an OIII filter I used a 48mm Hoya X1 green filter stacked onto a Baader Semi-Apo filter. This should allow through a fair bit of OIII, I thunk.
So here's the mess, um... pics that resulted.
From last to first, the B+W image is 10x3 minutes of Ha. The yellow mess is 10x3 minutes of Ha mapped to the red channel, 10x3 minutes of psuedo OIII mapped to the blue channel and a combo of Ha and psuedo OIII mapped to the green channel. I think I got that right.
The red pic is Ha to red, OIII to green and blue channels. Taken through a SW120 F5 achro refractor and Full Spectrum Nikon D70s. The experiment didn't really work out as I intended. Maybe due to not using a real OIII filter. Oh well better luck next time.
Which one do you like best?