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I recently spent my Xmas money on an L-Enhance filter as I have seen amazing results with this filter.
I took it for a test run on the Y Cas Nebula last night (not the best night, but when is?)
I managed to get around 43 mins of time.
I normally shoot 1 min exposures with my 1000D modified camera but I thought I'd go for 90 seconds as the filter would reduce brightness? (any thoughts on exposure times here would be great)
The results were not as great as I was hoping for - see below.
O over stretched it just to see if I had captured the 'ghost'. He's there, but it turns out really grainy and not the nice subtle wispy nebula that I see from other folks.
So my questions are:
- is this a tricky nebula target?
- What exposure times should I run?
- Is 43 mins way too little for this (or any) target?
- any other advice???
Canon 1000D - modified
Skywatcher 72ED Telescope
Skywatcher AzGTI mount (AZ mode at the moment until I can get polar alignment working with SharpCap)
Any thoughts, hints, tips greatly appreciated!
Thanks in advance!
Hi! So Ive found some pictures from an arxiv report in a database which I need for my project and converted them to fits files (The picture on the left). The one that was used in the arxiv report (picture on right) is a zoomed in picture of a galaxy in that picture, where its clearly visible. However when I try zooming in on the exakt coordinates of the galaxy in the fits image, its just plain black. I want the picture "raw", that's why I saved it as fits and not their pdf picture from report. Someone suggested first stretching the image for a more detailed image but some filters had to be used though... the only thing I can find on the tables of the images is that filter F160W was used. I have no idea how to move forward now, completely stuck. Would appreciate some help!
By Anonymous Astronomer
I'm looking to buy some NB filters and wanna make the best decision.
1. Does the size of the filter impacts the quality of the image? (is it a big impact?)
2. I know that lower HBW is best, but... for example: does the difference between 35nm and 7nm is worth the price?
3.Can you recommend some H-alpha, OIII, SII?
Thank you in advance!
Almost posting this one out of frustration with the weather but I guess I've been lucky to get enough to make the effort, so here's what I have so far.
Captures between 22 & 30 November through pretty dismal skies.
9x900 Ha Astrodon 5nm
6x900 OIII Astrodon 3nm
6x900 SII Astrodon 5nm
Esprit 150 with the new Flattener/Reducer 0.77x & QSI683
Processed in Pixinsight with a final pass through Topaz DeNoise AI. Still finding it a bit heavy handed & feeding my overcooking tendencies.
Feel free to poke, prod and mumble about it. Be warned, it's not too pretty in deep. I'd love more data but it's been dire. I have 15mins each of RGB for stars but not happy with results so far so desat ones will have to do for now.