For observation / data reduction

• Command list (in Japanese)
• IRAF/cl-script for overscan region correction [howossub.cl]
• Observation log sheet [PDF 0.1MB]
• Header keywords of a sample FITS image [text file]
• CCD image format vs field of view [2012/06/30-current] [2008-2012/06/29]
• CCD 4 port/overscan/prescan region in raw FITS file [In 2x2 binning] [In 1x1 binning] [FITS header keyword]

Development Reports

• 2007-03-31 Design of mechanics (Chiyonobu, Master thesis) [PDF 15MB]
• 2007-12-03 CCD setup/test in 2007 Nov. (Kawabata + Nakaya,Nagae) [PDF 1MB]
• 2008-10-24 Wollaston prism design, rutile-type added (Kawabata) [PDF 2MB]
• 2008-10-30 Performance verification 1 (Tanaka, colloqium transparency) [PDF 1MB]
• 2011-03-22 Document on control program (Komatsu) [PDF 1MB]

Data sheets

• Filter transmission curves [Plot] : Ascii text data [B] [V] [Rc] [Ic] [z'] (2006 Asahi Spectra Co., Ltd)
• Lens system design report [PDF] (2005-07-26 Lens-Ya!)

Drawings

• Lens train [PDF]
• Lenses [G1] [G2] [G3] [G4] [G5] [G6] [G7] [G8] [G9]
• Lens holder assembly [Collimator] [Camera]
• Lens holder parts (Collimator) [f01] [f02] [f03] [f04] [f05]
• Lens holder parts (Camera) [b01] [b02] [b03] [b04] [b05] [b06] [b07] [b08]
• Wollaston prism [Wide(calcite)] [Wide(Rutile)] [Narrow(MgF2)] [Normal(MgF2)]
• Grism [Grism(low/high disp.)]
• Prism/grism holders [Wide-f.Wol.] [Narrow-f.Wol.] [Normal Wol.]
• HOWPol Body outline [Outline 1] [Outline 2] [Flexture simulation]
• HOWPol Body assembly [Mask turret] [Trras] [Filter turret] [Grism/Wollaston stage] [Halfwave plate stage] [Pupil stage]
• HOWPol Body parts [List] [ALL parts PDF] [ALL parts PDF (older)]
• CCD dewar parts list [Cover page] [Parts list]
• CCD dewar assy [Outline] [Large CCD] [Small CCD]
• CCD dewar parts 1 [h01] [h02] [h03] [h04] [h05] [h06] [h07] [h08] [h09] [h10]
• CCD dewar parts 2 [h11] [h12] [h13] [h14] [h15] [h16] [h17] [h18] [h19] [h20]
• CCD dewar parts 3 [h21] [h22] [m303] [m304] [m305] [m30a] [m314]
• CCD dewar parts 4 [m305-a] [h01-a] [h20-a] [h20-b] [MF2coverplate]
• CCD parts [Hamamatsu CCD mother plate]
• MF2 cables [Power-supply cable]
• Mechatronics cables [CB01] [CB02] [CB03] [CB04] [CB05] [CB06] [CB07]
• Miscellaneous [Bellows1] [Bellows2] [Bellows3]

Partslist

• Parts list [Chiyonobu 20070110]
• Mechatronics parts [Parts list] [Motor drivers] [Motor cables]
• Mechatronics diagram [Chiyonobu 20070110]
• Mechatronics cables (motor drivers) [CB01] [CB02] [CB03] [CB04] [CB05] [CB06] [CB07]
• MF2 cables [Power-supply cable]