没问题。大家交流的目的就在于此。100Q这样的星点，的确很优秀了，你拍的很好。
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因为闲置太久，我几乎要把它挂到二手市场了，哈哈。
dode 发表于 2014-11-25 12:44
因为闲置太久，我几乎要把它挂到二手市场了，哈哈。
要出二手，先告诉我一声啊。谢谢
tiantian99 发表于 2014-11-24 23:52
你的气泡那张整片读出FWHM=4.43（当然转JPG会损失），FSQ106的整片读出FWHM=2.83，应该是多个星点的平均值 ...
拿了一张STT+焦平面调节环拍的星空，L通道曝光5秒钟（是否太短不算数？），CCDInspector分析如下图：
设置如下：
请两位高手看下。
sshyang 发表于 2014-11-25 21:32
拿了一张STT+焦平面调节环拍的星空，L通道曝光5秒钟（是否太短不算数？），CCDInspector分析如下图：
用MDL拍的？MDL里需要修改像素值单位的，你看看，或者问tiantian99,我在公司，没法看。
dode 发表于 2014-11-26 09:18
用MDL拍的？MDL里需要修改像素值单位的，你看看，或者问tiantian99,我在公司，没法看。
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MDL拍的。FITS文件里的信息：
SIMPLE = T
BITPIX = 16 /8 unsigned int, 16 & 32 int, -32 & -64 real
NAXIS = 2 /number of axes
NAXIS1 = 3358 /fastest changing axis
NAXIS2 = 2536 /next to fastest changing axis
BSCALE = 1.0000000000000000 /physical = BZERO + BSCALE*array_value
BZERO = 32768.000000000000 /physical = BZERO + BSCALE*array_value
DATE-OBS = '2014-10-22T13:41:22' /YYYY-MM-DDThh:mm:ss observation start, UT
EXPTIME = 5.0000000000000000 /Exposure time in seconds
EXPOSURE = 5.0000000000000000 /Exposure time in seconds
SET-TEMP = -20.000000000000000 /CCD temperature setpoint in C
CCD-TEMP = -20.000000000000000 /CCD temperature at start of exposure in C
XPIXSZ = 5.4000000000000004 /Pixel Width in microns (after binning)
YPIXSZ = 5.4000000000000004 /Pixel Height in microns (after binning)
XBINNING = 1 /Binning factor in width
YBINNING = 1 /Binning factor in height
XORGSUBF = 0 /Subframe X position in binned pixels
YORGSUBF = 0 /Subframe Y position in binned pixels
FILTER = 'Luminance' / Filter used when taking image
IMAGETYP = 'Light Frame' / Type of image
OBJCTRA = '19 59 37' / Nominal Right Ascension of center of image
OBJCTDEC = '+22 43 10' / Nominal Declination of center of image
OBJCTALT = ' 24.0356' / Nominal altitude of center of image
OBJCTAZ = ' 64.9372' / Nominal azimuth of center of image
OBJCTHA = ' -4.2525' / Nominal hour angle of center of image
PIERSIDE = 'EAST ' / Side of pier telescope is on
SITELAT = '00 00 00' / Latitude of the imaging location
SITELONG = '00 00 00' / Longitude of the imaging location
JD = 2456953.0703935185 /Julian Date at start of exposure
JD-HELIO = 2456953.0711272419 /Heliocentric Julian Date at exposure midpoint
AIRMASS = 2.4407370211299990 /Relative optical path length through atmosphere
FOCALLEN = 580.00000000000000 /Focal length of telescope in mm
APTDIA = 100.00000000000000 /Aperture diameter of telescope in mm
APTAREA = 7853.9818525314331 /Aperture area of telescope in mm^2
EGAIN = 0.37999999523162842 /Electronic gain in e-/ADU
SWCREATE = 'MaxIm DL Version 5.24 131231 15PCM' /Name of software that created
the image
SBSTDVER = 'SBFITSEXT Version 1.0' /Version of SBFITSEXT standard in effect
OBJECT = ' '
TELESCOP = 'SharpStar 100Q' / telescope used to acquire this image
INSTRUME = 'SBIG STT-8300 3 CCD Camera'
OBSERVER = 'Songshao Yang'
NOTES = ' '
FLIPSTAT = ' '
ANMISCH = '1 arc sec'
ANMISLE = '400 '
ANMISLG = '1 '
ANM00000 = '"<Measurements version=%221%22></Measurements>"'
CSTRETCH = 'Medium' / Initial display stretch mode
CBLACK = 2359 /Initial display black level in ADUs
CWHITE = 3025 /Initial display white level in ADUs
PEDESTAL = 0 /Correction to add for zero-based ADU
SWOWNER = 'nsc ' / Licensed owner of software
INPUTFMT = 'FITS ' / Format of file from which image was read
其中有像素大小和焦距，这些可以算出arcsec/pixel，口径参数也有但应不在CCDInspector的计算范围内吧。
确实好镜子啊 市区拍的太不容易了，下次我们上山吧{:5_278:} whyaaaning 发表于 2014-11-29 19:18
市区拍的太不容易了，下次我们上山吧
我的装备齐全了，只要有时间就可以上山 用这么小的底，说明不了100Q的素质。Atikone跟人家8300甚至APSC比FWHM，怎么可以呢
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