sytzezwei
Mitglied
Hello
Four years ago I bought 3 Ha filters; a 12 nm and a 6 nm Ha astromik filter, and a 7 nm Baader Ha filter.
Two years later I bought a 6 Ha nm astromik EOS clipfilter.
Now for the first time I have made images through these filters of a color-chart from a Eizo LCD monitor with a Canon 30D and a 50mm lens.
Here is a mosaïc from the images, except for the color-correct one on the left, all images were made with the same exposure time, (0.3 seconds, F2.2, iso640).
The results are very, very remarkble, the 7 nm Baader Ha filter and the 12 nm Ha astromik filter suppress the unwanted light much and much better then both 6 nm Ha filters from Astromik.
Also light from a green laser pointer is far better suppressed by the 7 nm Baader and 12 nm astromik filters.
The 6 nm Ha filter from Astromik has been checked by Gerd Neumann, according to him this filter is OK!
I have made a few images with the 6 nm ha astromik filters they look allright.
Are these 6 nm Ha astromik filters realy OK???
Gerrit van der veen , Holland
Four years ago I bought 3 Ha filters; a 12 nm and a 6 nm Ha astromik filter, and a 7 nm Baader Ha filter.
Two years later I bought a 6 Ha nm astromik EOS clipfilter.
Now for the first time I have made images through these filters of a color-chart from a Eizo LCD monitor with a Canon 30D and a 50mm lens.
Here is a mosaïc from the images, except for the color-correct one on the left, all images were made with the same exposure time, (0.3 seconds, F2.2, iso640).
The results are very, very remarkble, the 7 nm Baader Ha filter and the 12 nm Ha astromik filter suppress the unwanted light much and much better then both 6 nm Ha filters from Astromik.
Also light from a green laser pointer is far better suppressed by the 7 nm Baader and 12 nm astromik filters.
The 6 nm Ha filter from Astromik has been checked by Gerd Neumann, according to him this filter is OK!
I have made a few images with the 6 nm ha astromik filters they look allright.
Are these 6 nm Ha astromik filters realy OK???
Gerrit van der veen , Holland