Cygnus (Deneb + Sadr), Lyra, Cygnus (Sadr + Gienah)

[XR250]

Cygnus (Deneb + Sadr) NGC7000 + IC5070 + NGC6910
2010-7-13 01:32 - 2:33 HKT,
Tin Shui Wai
Nikon 85mm f1.8, @f4, Mod. 450D + CLS
ISO400 RAW, 180sec x20,
EQ6 Pro

Lyra 拍攝時有薄雲
2010-7-12 23:13 - 23:59 HKT,
Tin Shui Wai
Nikon 85mm f1.8, @f4, Mod. 450D + CLS
ISO400 RAW, 180sec x14,
EQ6 Pro

Cygnus (Sadr + Gienah)
2010-7-13 00:46 - 1:22 HKT,
Tin Shui Wai
Nikon 85mm f1.8, @f4, Mod. 450D + CLS
ISO400 RAW, 180sec x11,
EQ6 Pro

[Nosneb]

掂呀!! CLS既效果真係唔錯喎

[funoooo]

不錯！

[XR250]

天氣好，唔關我事。我開了快門之後，就落樓下睇電視。在天台hea住影，算係咁。住了十幾年，我都無諗過天台可以影到NGC7000

"11x180sec_CygnusGamma_ps_small.jpg" 我原本想包括幾個Veil nebula(NGC6990、NGC6992、NGC6979)，可惜枝鏡唔夠寬。早知影多mosaic la!!!

[XR250]

掂呀!! CLS既效果真係唔錯喎

睇返AstronomikCLS個graph, 其實跟IDAS P2分別只係block多兩小段(570nm及610nm)。 是但用一塊就得。


CLS
http://www.astronomik.com/en/astronomik_cls_filter.html
P2
http://www.danielmccauley.com/images/idaslps_plot01.gif

[northwolfwu]

改滤镜，加CLS的效果不错。

已经在OPT上买了一个，期望快点到手，小区的光害实在是让人心烦。

[owl]

掂呀!! CLS既效果真係唔錯喎

睇返AstronomikCLS個graph, 其實跟IDAS P2分別只係block多兩小段(570nm及610nm)。 是但用一塊就得。


CLS
http://www.astronomik.com/en/astronomik_cls_filter.html
P2
http://www.danielmccauley.com/images/idaslps_plot01.gif

From the web, I found that P2 has a restriction that prevent it to be used on focal length less than 100mm (35mm format). Does CLS has the same retriction?

[XR250]

From the web, I found that P2 has a restriction that prevent it to be used on focal length less than 100mm (35mm format). Does CLS has the same retriction?

restriction: less than focal length 100mm，應該指裝在鏡頭之前。我諗CLS都一樣有問題。

但我的CLS係EOS clip-filter, 裝在DSLR與lens中間，這種裝法，P2或CLS都應該無>FL=100mm的限制。 不過要留意，用了clip filter之後，會頂住枝鏡頭，好多鏡頭都裝唔到上DSLR上。

Hutech的IDAS P2都有clip filter format, 唔止canon, 連nikon body都有。
http://www.sciencecenter.net/hutech/filters/ffilter.htm

CLS clip-filter, 我試過10.5mm魚眼都無問題
http://www.hkastroforum.net/viewtopic.php?t=19852

[owl]

From the web, I found that P2 has a restriction that prevent it to be used on focal length less than 100mm (35mm format). Does CLS has the same retriction?

restriction: less than focal length 100mm，應該指裝在鏡頭之前。我諗CLS都一樣有問題。

但我的CLS係EOS clip-filter, 裝在DSLR與lens中間，這種裝法，P2或CLS都應該無>FL=100mm的限制。 不過要留意，用了clip filter之後，會頂住枝鏡頭，好多鏡頭都裝唔到上DSLR上。

Hutech的IDAS P2都有clip filter format, 唔止canon, 連nikon body都有。
http://www.sciencecenter.net/hutech/filters/ffilter.htm

CLS clip-filter, 我試過10.5mm魚眼都無問題
http://www.hkastroforum.net/viewtopic.php?t=19852

Thank you XR250. I am a Nikon user. Unfortunately, those P2 Nikon clip filters are for old models and CLS clip-filter doesn't support Nikon.

I suspect those EOS lenses that couldn't fit when CLS are inserted are EF-S lenses (They have longer rear elements compared with full frame EOS lenses).

[XR250]

From the web, I found that P2 has a restriction that prevent it to be used on focal length less than 100mm (35mm format). Does CLS has the same retriction?

restriction: less than focal length 100mm，應該指裝在鏡頭之前。我諗CLS都一樣有問題。

但我的CLS係EOS clip-filter, 裝在DSLR與lens中間，這種裝法，P2或CLS都應該無>FL=100mm的限制。 不過要留意，用了clip filter之後，會頂住枝鏡頭，好多鏡頭都裝唔到上DSLR上。

Hutech的IDAS P2都有clip filter format, 唔止canon, 連nikon body都有。
http://www.sciencecenter.net/hutech/filters/ffilter.htm

CLS clip-filter, 我試過10.5mm魚眼都無問題
http://www.hkastroforum.net/viewtopic.php?t=19852

Thank you XR250. I am a Nikon user. Unfortunately, those P2 Nikon clip filters are for old models and CLS clip-filter doesn't support Nikon.

I suspect those EOS lenses that couldn't fit when CLS are inserted are EF-S lenses (They have longer rear elements compared with full frame EOS lenses).

我都係nikon user, 所以用mod. 450D時，我都係加 AI > EF convertor裝 nikon 鏡在canon body用。暫時試了幾枝nikon鏡都無撞clip-filter問題。

[owl]

From the web, I found that P2 has a restriction that prevent it to be used on focal length less than 100mm (35mm format). Does CLS has the same retriction?

restriction: less than focal length 100mm，應該指裝在鏡頭之前。我諗CLS都一樣有問題。

但我的CLS係EOS clip-filter, 裝在DSLR與lens中間，這種裝法，P2或CLS都應該無>FL=100mm的限制。 不過要留意，用了clip filter之後，會頂住枝鏡頭，好多鏡頭都裝唔到上DSLR上。

Hutech的IDAS P2都有clip filter format, 唔止canon, 連nikon body都有。
http://www.sciencecenter.net/hutech/filters/ffilter.htm

CLS clip-filter, 我試過10.5mm魚眼都無問題
http://www.hkastroforum.net/viewtopic.php?t=19852

Thank you XR250. I am a Nikon user. Unfortunately, those P2 Nikon clip filters are for old models and CLS clip-filter doesn't support Nikon.

I suspect those EOS lenses that couldn't fit when CLS are inserted are EF-S lenses (They have longer rear elements compared with full frame EOS lenses).

我都係nikon user, 所以用mod. 450D時，我都係加 AI > EF convertor裝 nikon 鏡在canon body用。暫時試了幾枝nikon鏡都無撞clip-filter問題。

After checking the photos (from dpreview) of the lens mounts and mirror chambers of D40X, D80, D90, D3000, D5000, D200 and D300s, I suspect the P2 clip filter for old models can also be used on new models.

[owl]

From the web, I found that P2 has a restriction that prevent it to be used on focal length less than 100mm (35mm format). Does CLS has the same retriction?

restriction: less than focal length 100mm，應該指裝在鏡頭之前。我諗CLS都一樣有問題。

但我的CLS係EOS clip-filter, 裝在DSLR與lens中間，這種裝法，P2或CLS都應該無>FL=100mm的限制。 不過要留意，用了clip filter之後，會頂住枝鏡頭，好多鏡頭都裝唔到上DSLR上。

Hutech的IDAS P2都有clip filter format, 唔止canon, 連nikon body都有。
http://www.sciencecenter.net/hutech/filters/ffilter.htm

CLS clip-filter, 我試過10.5mm魚眼都無問題
http://www.hkastroforum.net/viewtopic.php?t=19852

Thank you XR250. I am a Nikon user. Unfortunately, those P2 Nikon clip filters are for old models and CLS clip-filter doesn't support Nikon.

I suspect those EOS lenses that couldn't fit when CLS are inserted are EF-S lenses (They have longer rear elements compared with full frame EOS lenses).

我都係nikon user, 所以用mod. 450D時，我都係加 AI > EF convertor裝 nikon 鏡在canon body用。暫時試了幾枝nikon鏡都無撞clip-filter問題。

After checking the photos (from dpreview) of the lens mounts and mirror chambers of D40X, D80, D90, D3000, D5000, D200 and D300s, I suspect the P2 clip filter for old models can also be used on new models.

[anyone]

[Chuen Lee]

掂,好靚呀!有個天台真好

[Subaru]

誇晒張, 可以在屋企影wide field, 真係同人唔同命, 生活可以噤寫意.