Research & Science Home ESA Public Web Site Sci-Tech Portal ESA Intranet     
Astrophysics Missions Planetary Exploration Missions Solar Terrestrial Science Missions Fundamental Physics Missions Science Faculty

25 March 2012

Image #470 - Ultraviolet




1. Observer
Keyword: OBSERVER (String)
Name of the observer.
?
Name:Pieter G. Welters
Keyword: COUNTRY (String)
Country name of observer.
?
Country:Netherlands
Keyword: AFFILIAT (String)
Name of your local institute, observatory, association, club, ...
?
Affiliation:Redlightgroup
Keyword: URL (String)
Relevant personal or institutional web site.
?
URL:http://www.redlightgroup.nl
2. Location
Keyword: LOCATION (String)
A name for the observing site.
?
Location name:Colmschate, Deventer
Keyword: MPC_CODE (String)
The code of the observatory as registered with the Minor Planet Center, if applicable.
?
MPC-code:
Keyword: LONGITUD (Float)
The longitude of the observing site in decimal degrees. East is positive, West is negative.
?
Longitude:6.2267 °
Keyword: LATITUDE (Float)
The latitude of the observing site in decimal degrees. North is positive, South is negative.
?
Latitude:52.2466 °
Keyword: HEIGHT (Float)
The height of the observatory above mean sea level in meters.
?
Height:8 m
3. Sky conditions
Keyword: SKYDESC (String)
General description of the condition of the sky (e.g. thin cirrus, mist, daylight, twilight, dust, high humidity).
?
Sky description:daylight, thin cirrus
Keyword: SEEING (String)
'0' is worst seeing, '10' is excellent seeing (ALPO/Pickering scale).
?
Seeing:6/10
Keyword: TRANSPAR (String)
'0' is worst transparency, '5' is perfect transparency.
?
Transparency:5/5
Keyword: VIS_LM (Float)
The naked-eye limiting magnitude (indicating the transparency of the sky). The value should only be approximate (e.g. 5.5 or 6.0).
?
Limiting magnitude:0
Keyword: WIND (String)
Description of the wind (e.g. 'no wind', 'telescope unstable due to heavy wind', ... )
?
Wind:
Keyword: CLOUDS (String)
The cloud cover, following the standard convention of giving the percentage of cloud cover in eights. '0/8' means clear sky, '4/8' means 50% clouds.
?
Cloud cover:1/8
4. Telescope
Keyword: TELESCOP (String)
Short description of the telescope.
?
Telescope name:Takahashi Mewlon 210
Keyword: APER_DIA (Float)
Diameter of aperture in mm.
?
Aperture diameter:210 mm
Keyword: F_RATIO (String)
The focal ratio of the telescope, e.g. f/10.
?
Focal ratio:f/12
Keyword: OBSTRUC (Float)
Percentage of obstructed area (not applicable for refractors).
?
Obstructed area:32 %
Keyword: EFF_FLEN (Float)
The effective focal length of the system including all Barlow lenses, eyepiece projections, etc.
?
Eff. focal length:6280 mm
Keyword: BARLOW (String)
Make, type, and magnification of a Barlow lens, if used. Else use 'N/A'.
?
Barlow:Melles Griot Fused-Silica Lens f=-100.0 mm, coating HEBBAR UV
Keyword: EYEPIECE (String)
If eyepiece projection was used, specify the make, type, and focal length of eyepiece. Else use 'N/A'.
?
Eyepiece:N/A
5. Camera and filter
Keyword: CAMERA (String)
Make and name of the camera. If possible, also provide the make and type of the actual CCD chip.
?
Camera name:The Imaging Source DMK 21AU618.AS 640x480 monochrome camera
Keyword: CAMDEPTH (Integer)
The dynamic range of the camera expressed in bits per pixel.
?
Bit depth:8 bit
Keyword: CAMGAIN (String)
Description of the gain setting of the camera. If the range of the gain is unspecified, then supply a number between 0 (lowest available gain) and 1 (higest available gain). Free text is also allowed (e.g. 'setting C (high)', '20 electrons/DN', ...)
?
Gain:0.4
Keyword: FILTER (String)
If your filter is not in the list, give enough information such that a filter transmission curve can be found. Typically this means: Give the name of the manufacturer, a color band (U, V, B, R), any potential other names given to filters by the manufacturer. You may also specify a stack of filters.
?
Filter:Astrodon UVenus, www.astrodon.com/products/filters/uvenus_filter/
Keyword: WVRANGE (String)
Principal wavelength transmitted by the filter. One of 'ultraviolet', 'visible', 'infrared' or 'mixed'.
?
Wavelength range:ultraviolet
6. Exposure
Keyword: TOTNOFRM (Integer)
Total number of frames recorded.
?
Frames recorded:1800
Keyword: EXPOSURE (Float)
Exposure time of camera in seconds (per frame).
?
Exposure time:0.08 s
Keyword: DATE_OBS (Date)
Start time of the exposure in Universal Time (UT = GMT). Format should be 'YYYY-MM-DDThh:mm:ss' (ISO), for example '2001-01-01T12:34:56'.
?
Start time (first frame):2012-03-25T16:45:24
Keyword: DATE_END (Date)
End time of the exposure in Universal Time (UT = GMT). Format should be 'YYYY-MM-DDThh:mm:ss' (ISO), for example '2001-01-01T12:34:56'.
?
End time (last frame):2012-03-25T16:47:42
Keyword: NORTHDIR (String)
The approximate direction of north in the image. If necessary, specify an angle in degrees counted from the top of the image in clockwise direction
?
North direction:TOP
Keyword: PRECDIR (String)
The approximate 'preceeding' direction, i.e. the direction into which Venus is moving due to the earth rotation. This will allow to judge whether the image is mirror-image or not. If necessary, specify an angle in degrees counted from the top of the image in clockwise direction
?
Preceeding direction:RIGHT
Keyword: PIXELSCL (Float)
The pixel scale in arcsec per pixel.
?
Pixel scale:0.22 "/px
7. Image processing
Keyword: PROC_SW (String)
Name and version of the software used for image processing.
?
Software:Registax 6
Keyword: N_FRAMES (Integer)
Number of frames used to obtain the image (only applicable of several frames were stacked use '1' if no stacking was performed).
?
Frames used:1440
Keyword: DARKFLAG (String)
If dark image was subtracted, set to YES, if not, set to NO.
?
Dark field:NO
Keyword: FLATFLAG (String)
If flat field was used, set to YES, if not set to NO.
?
Flat field:NO
Keyword: HISTORY (String)
Short description of important image (post-)processing steps that were applied.
?
History:Wavelets
Mild histogrm stretch
8. Others
Keyword: CREDITS (String)
A (short) text line which should be used when somebody wants to give credit to the image. Example 'D. Koschny (B12), 2007.'
?
Credit line:Pieter Welters, 2012
Keyword: COMMENT (String)
General comments about the image or noteworthy features. If the image was used to make a higher level product (e.g. color or composite image), you may provide a link to it here.
?
Comments:
9. Image info
Keyword: BITPIX (Integer)
The number of bits per pixel. This keyword is required by the FITS-standard.
?
Bits per pixel:16
Keyword: NAXIS (Integer)
Number of data axes (2 in the case of a monochrome images). This keyword is required by the FITS-standard.
?
Axes:3
Keyword: NAXIS1 (Integer)
The number of pixels of the image in the X direction. This keyword is required by the FITS-standard.
?
X-size:640 px
Keyword: NAXIS2 (Integer)
The number of pixels of the image in the Y direction. This keyword is required by the FITS-standard.
?
Y-size:480 px
Keyword: STATUS (String)
Status in the VAA. This keyword is automatically set by the VAA.
?
Status:accepted
Keyword: RECEIVED (Date)
Date the image was received. This keyword is automatically set by the VAA.
?
Uploaded:2012-03-25T21:24:57
Keyword: UPDATED (Date)
Last update of the data. This keyword is automatically set by the VAA.
?
Last update:2012-03-25T21:30:23

     Copyright © 2014 European Space Agency. All rights reserved.
This page was first created on 19 September, 2007 and was last updated on 13 November, 2007.
Password Synchronization

The RSSD Web Portal provides a single login facility to simplify access to several other applications within this site.

The login facility has detected that you have passwords to one or more of these other systems (Livelink, Mantis, CVS, etc.) which do not match your current LDAP password.

By clicking on [SYNCHRONIZE] you will be able to reset all these passwords and bring them into line with your main portal password with no further effort on your part.

Synchronizing Passwords - Please Wait

Logging In - Please Wait