高美古之行(一)

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昇仔
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文章: 2377
註冊時間: 週二 13 11月, 2007 17:40
來自: 香港

文章 昇仔 » 週五 02 4月, 2010 17:38

A/45 寫:
昇仔 寫: Interesting project :D :D :D But the greatest problem is the mount and there seems to be not many choices for it. :cry:
That's true! I'm stuck at the mount. Right now I've two choices:
1) Tak EM11 "die-hard approach" - but it's still too heavy for me at 8+kg for the mount head to bring onto the plane; or
2) GP2 with SS2000 or SBS "the nimble one"- much lighter -mount head 4+kg only but a bit less accurate.
"Cargo" on board (scope+cam+guidescope etc.) is approaching 7kgs.
Still not decided yet.
Yes ar.... EM11 is still quite heavy and pretty expensive too. :( What do u think about GP2? is it good enough for serious astrophotography? Any doubt?

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noodle
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註冊時間: 週五 04 7月, 2003 16:34
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文章 noodle » 週五 02 4月, 2010 18:10

昇仔 寫:
A/45 寫:
昇仔 寫: Interesting project :D :D :D But the greatest problem is the mount and there seems to be not many choices for it. :cry:
That's true! I'm stuck at the mount. Right now I've two choices:
1) Tak EM11 "die-hard approach" - but it's still too heavy for me at 8+kg for the mount head to bring onto the plane; or
2) GP2 with SS2000 or SBS "the nimble one"- much lighter -mount head 4+kg only but a bit less accurate.
"Cargo" on board (scope+cam+guidescope etc.) is approaching 7kgs.
Still not decided yet.
Yes ar.... EM11 is still quite heavy and pretty expensive too. :( What do u think about GP2? is it good enough for serious astrophotography? Any doubt?
當你想用大小小鏡時,你又會覺得GP2唔夠用,想曝光耐d又驚佢唔準。
一於EM11啦,肉痛一次 以後唔駛煩upgrade。
重量可以慢慢再tune,tracking/guiding 唔準都幾難tune [萬年奸臣] [萬年奸臣]

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昇仔
夸克星
文章: 2377
註冊時間: 週二 13 11月, 2007 17:40
來自: 香港

文章 昇仔 » 週五 02 4月, 2010 18:23

noodle 寫:
昇仔 寫:
A/45 寫:
昇仔 寫: Interesting project :D :D :D But the greatest problem is the mount and there seems to be not many choices for it. :cry:
That's true! I'm stuck at the mount. Right now I've two choices:
1) Tak EM11 "die-hard approach" - but it's still too heavy for me at 8+kg for the mount head to bring onto the plane; or
2) GP2 with SS2000 or SBS "the nimble one"- much lighter -mount head 4+kg only but a bit less accurate.
"Cargo" on board (scope+cam+guidescope etc.) is approaching 7kgs.
Still not decided yet.
Yes ar.... EM11 is still quite heavy and pretty expensive too. :( What do u think about GP2? is it good enough for serious astrophotography? Any doubt?
當你想用大小小鏡時,你又會覺得GP2唔夠用,想曝光耐d又驚佢唔準。
一於EM11啦,肉痛一次 以後唔駛煩upgrade。
重量可以慢慢再tune,tracking/guiding 唔準都幾難tune [萬年奸臣] [萬年奸臣]
8+ kg mount head, 咪同 SXD 差唔多,好似毫無著數 :roll:

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noodle
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文章: 2835
註冊時間: 週五 04 7月, 2003 16:34
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文章 noodle » 週五 02 4月, 2010 18:31

昇仔 寫:
noodle 寫:
昇仔 寫:
A/45 寫:
昇仔 寫: Interesting project :D :D :D But the greatest problem is the mount and there seems to be not many choices for it. :cry:
That's true! I'm stuck at the mount. Right now I've two choices:
1) Tak EM11 "die-hard approach" - but it's still too heavy for me at 8+kg for the mount head to bring onto the plane; or
2) GP2 with SS2000 or SBS "the nimble one"- much lighter -mount head 4+kg only but a bit less accurate.
"Cargo" on board (scope+cam+guidescope etc.) is approaching 7kgs.
Still not decided yet.
Yes ar.... EM11 is still quite heavy and pretty expensive too. :( What do u think about GP2? is it good enough for serious astrophotography? Any doubt?
當你想用大小小鏡時,你又會覺得GP2唔夠用,想曝光耐d又驚佢唔準。
一於EM11啦,肉痛一次 以後唔駛煩upgrade。
重量可以慢慢再tune,tracking/guiding 唔準都幾難tune [萬年奸臣] [萬年奸臣]
8+ kg mount head, 咪同 SXD 差唔多,好似毫無著數 :roll:
我覺得SXD重可以tune輕d,例如唔要個counterweight用電池代替,對腳再改短d。
上次量你隻SXD:head 重7.5kg,腳就5.5kg

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昇仔
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文章: 2377
註冊時間: 週二 13 11月, 2007 17:40
來自: 香港

文章 昇仔 » 週五 02 4月, 2010 19:04

noodle 寫:
昇仔 寫:
noodle 寫:
昇仔 寫:
A/45 寫:
昇仔 寫: Interesting project :D :D :D But the greatest problem is the mount and there seems to be not many choices for it. :cry:
That's true! I'm stuck at the mount. Right now I've two choices:
1) Tak EM11 "die-hard approach" - but it's still too heavy for me at 8+kg for the mount head to bring onto the plane; or
2) GP2 with SS2000 or SBS "the nimble one"- much lighter -mount head 4+kg only but a bit less accurate.
"Cargo" on board (scope+cam+guidescope etc.) is approaching 7kgs.
Still not decided yet.
Yes ar.... EM11 is still quite heavy and pretty expensive too. :( What do u think about GP2? is it good enough for serious astrophotography? Any doubt?
當你想用大小小鏡時,你又會覺得GP2唔夠用,想曝光耐d又驚佢唔準。
一於EM11啦,肉痛一次 以後唔駛煩upgrade。
重量可以慢慢再tune,tracking/guiding 唔準都幾難tune [萬年奸臣] [萬年奸臣]
8+ kg mount head, 咪同 SXD 差唔多,好似毫無著數 :roll:
我覺得SXD重可以tune輕d,例如唔要個counterweight用電池代替,對腳再改短d。
上次量你隻SXD:head 重7.5kg,腳就5.5kg
從呢個方向諗可能好 D :P 試試看.

syyuen168
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文章: 3856
註冊時間: 週五 06 7月, 2007 23:06

文章 syyuen168 » 週五 02 4月, 2010 23:01

Lawrence,

Portability, flexibility and light in weight are overwhelming important for me to travel around to take AP. If EM 11 has such features with high accuracy, I will definitely pay for it despite its high price but such mount does not exist nowadays. I will definitely autoguide my GP2 in this summer somewhere in China. I suggest you bring your scopes along to have some experience between making the final purchase decision.
A/45 寫:
昇仔 寫: Interesting project :D :D :D But the greatest problem is the mount and there seems to be not many choices for it. :cry:
That's true! I'm stuck at the mount. Right now I've two choices:
1) Tak EM11 "die-hard approach" - but it's still too heavy for me at 8+kg for the mount head to bring onto the plane; or
2) GP2 with SS2000 or SBS "the nimble one"- much lighter -mount head 4+kg only but a bit less accurate.
"Cargo" on board (scope+cam+guidescope etc.) is approaching 7kgs.
Still not decided yet.

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A/45
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文章: 954
註冊時間: 週六 12 2月, 2005 22:42

文章 A/45 » 週六 03 4月, 2010 00:09

syyuen168 寫:Lawrence,

Portability, flexibility and light in weight are overwhelming important for me to travel around to take AP. If EM 11 has such features with high accuracy, I will definitely pay for it despite its high price but such mount does not exist nowadays. I will definitely autoguide my GP2 in this summer somewhere in China. I suggest you bring your scopes along to have some experience between making the final purchase decision.
That's a good idea - we should team up and each of us can bring less!

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A/45
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文章: 954
註冊時間: 週六 12 2月, 2005 22:42

文章 A/45 » 週六 03 4月, 2010 00:17

noodle 寫: 當你想用大小小鏡時,你又會覺得GP2唔夠用,想曝光耐d又驚佢唔準。
一於EM11啦,肉痛一次 以後唔駛煩upgrade。
重量可以慢慢再tune,tracking/guiding 唔準都幾難tune [萬年奸臣] [萬年奸臣]
That's exactly my concern. Does the lighter weight really worth the loss in accuracy... I've once owned an EM11 and has no doubt in its guiding accuracy which is top notch; but if I put the 7kg imaging "cargo" on the GP2 for say 5 min. subs I just have no idea what it would turn out to be.

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Subaru
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文章: 6693
註冊時間: 週三 02 7月, 2003 19:27

文章 Subaru » 週六 03 4月, 2010 00:20

A/45 寫:
noodle 寫: 當你想用大小小鏡時,你又會覺得GP2唔夠用,想曝光耐d又驚佢唔準。
一於EM11啦,肉痛一次 以後唔駛煩upgrade。
重量可以慢慢再tune,tracking/guiding 唔準都幾難tune [萬年奸臣] [萬年奸臣]
That's exactly my concern. Does the lighter weight really worth the loss in accuracy... I've once owned an EM11 and has no doubt in its guiding accuracy which is top notch; but if I put the 7kg imaging "cargo" on the GP2 for say 5 min. subs I just have no idea what it would turn out to be.
For sub-zero temperature, I would only trust a mount running on bearings.

So, it really depends on where it might be used.

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