很特别的 M42,M45
这是用扩大摄影吗?

下面是引用 aa 于 2012-10-09 09:52 发表的 :
很特别的 M42,M45
这是用扩大摄影吗?

AA早呀，不是目镜后扩大摄影，只是目镜后拍摄。

还有4张今年的要补上，当时因为懒得写中文报告就只记在外国论坛里，现在补贴后整篇贴就完整了。


NO.30)

Tonightvery excited . The sky suddenly become a bit clear without not muchclouds at around 10 o'clock . So I quickly take action . I spend around30 minutes to find out this M41 by myself , I am very pleased when Isee it . It's really beautiful in the eyepiece , so many bright stars !And then after looking it for a while I turn to do imaging . At first Iuse my Omlympus Digital camera since last time it can have enoughsensitivity on M45 and M42 , but this time M41 is much dimmer . Itcannot be shown even a little bit of this M41 on the camera display atit's maximun 16 seconds exspoure . And then No way so I have to changeto use DSI , so fianlly I can catch it at 15 seconds per frame in DSI ,I take 22 frames . Finally do stacking in IRIS , and finalize in PS .Tonight the observing session is fine . The time now is 0:46am.

NO.31)

Olympus DC : 16s X 21
IRIS , PS .



So tonight this M35 is not really a good take , but it's just better than nothing .
Because I can have one more object in my list .
Thetracking is very bad . My main goal this time is to see if my DC canhave enough sensitivity to this cluster with magitude 5.0 under thislow transparancy sky . It still can show a bit of this M35 . I realisethe reason why last time the M41 was not captured well by my DC , it'snot because of the DC sensitivity. It was because I haven't switch onthe noice reduction option of my DC , that's why it produced so muchnoise and cannot revealed the object well .
2ndly , tonight M35 islocated nearly at the zenith region , It's my first time to shiftbackward the observatory dome to do shooting . I found it's not verydifficlut for me to rasie it up and move it back . So I am pleasedabout it .

No.32)

It's 1 months no clear nights , tonight I shoot M50 ( mag= 5.9 ,size =15').
it's taken with DSI , 30 seconds X 17 .
I use a dirfting softwere (WCS for DSI ) to do polar alignment .
Stacked in IRIS , post process in PS ( curve function , treshold ).

No.33)

Tonight M3 .
15 seconds x 35 taken by DSI
stacked in IRIS , PS pro-processed

NO.34)

作晚木星

ORION 6"/F5 newtonian
2X barlow 
EQ3
DSI ( 303 frames)
IRIS , PS

Observe : 2012/10/19  22:15

NO.35)

M34 今晚,人肉时角定位，星体与目镜中心偏差约1/3度，单张15秒55张,总跟踪时间850秒单跟,首次使用DSI双星自动叠加，PS后期。

ORION 6"/F5 Newtonian
EQ3
DSI（ 15s X 55)
Photoshop

Observe : 2010/10/25 22:00

No.36)

作晚木星,试下用philips spnc700 nc 摄像头,同样也是加2X , 比上次DSI 拍的大是大点,但没那么清楚。

ORION 6"/F5 Newtonian
EQ3
Philipes spn700nc （ 500 frames )
IRIS , Photoshop

Observe : 2012/10/31 22:30

拍的不错也..