匈牙利著名的天文摄影师Lóránd Fényes,长期担任匈牙利天文协会的讲师,作品发表在杂志和APOD上,获得各种国际奖项,给天文望远镜以及配件厂商提供产品测试,并且开设天文培训课:天文图片处理,拍摄,构图等等,网站每月点击量上千。这次Optolong的新款SHO 6.5/7nm窄带滤镜也由他来测试,并且提供了直观的对比图,得到了Lóránd Fényes的认可。
参数:
Observation point: Hungary, Piliscsev
Date: 11.02.2016
Seeing: 6/10
Transparency: 7/10
Sky quality: faint light pollution from south (Budapest, capital of Hungary is 30 kms away)
Expositions: 10 min each
Telescope: SkyWatcher Esprit 100/550
Mount: SkyWatcher AZ-EQ6 GT
CCD: QHY IC8300
Reductor: Riccardi Reducer 0.75x
Filters
Baader Ha 7nm 36mm
Baader OIII 8.5nm 36mm
Optolong Ha 7nm 36mm
Optolong OIII 6.5nm 36mm
Guiding: QHY5L-II
摄影师Lóránd Fényes评测Optolong 窄带HO滤镜
摄影师Lóránd Fényes评测Optolong 窄带HO滤镜
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- Quick summary
I made the same processing steps for the fair comparison: dark, flat, flatdark. Grey box: exactly the same area, same luminance values (C: 73%, M: 67%, Y: 65%, K: 80).
The signal-to-noise ratio of Baader HA filter measures lower contrast. Th - ha_horsehead-1.gif (2.64 MiB) 已瀏覽 26821 次
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- Baader H-alpha Narrowband 7nm vs Optolong H-Alpha 7nm
- ha_comp-1.jpg (1.01 MiB) 已瀏覽 26821 次
Baader OIII Narrowband 8.5nm vs Optolong H-Alpha 6.5nm
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- Quick summary:
I made the same processing steps for the fair comparison: dark, flat, flatdark. Grey box: exactly the same area, same luminance values (C: 73%, M: 67%, Y: 65%, K: 80).
I had hard time with bader OIII since it results a rather uneven picture - OIII_rosette.gif (2.34 MiB) 已瀏覽 26815 次
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- oiii_comp.jpg (1.07 MiB) 已瀏覽 26815 次
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