More asteroids
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by
bluemagi
Astertoids at 2 O'clock. on sky viewer it looks like 2 more, I found 2 earlier today.
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by
Budgieye
moderator
Very nice, I wonder where the red filter objects are. I can never find them. Maybe the red image was done on a different night.
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Yeah can never find them around, if im correct there was a mention of them not being imaged on the same night, still open question in DECaLS thread.
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c_cld
Not always: see http://talk.galaxyzoo.org/?_ga=1.172837153.342230058.1450627220#/boards/BGZ0000004/discussions/DGZ0001tvu
green and red blob near galaxy CGCG 377-024 http://legacysurvey.org/viewer/jpeg-cutout-decals-dr2/?ra=331.57927309&dec=1.12829842&size=512&pixscale=0.12&bands=grz
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by
c_cld
Example of #asteroid http://legacysurvey.org/viewer/jpeg-cutout-decals-dr2/?ra=123.9555&dec=19.6847&size=512&pixscale=0.1171875&bands=grz
http://legacysurvey.org/viewer/?ra=123.9555&dec=19.6847&zoom=16&layer=decals-dr2
From "exposures button" we get
Exposure 392793, g band, 75.0 sec exposure time, seeing 1.56 arcsec, file decam/CP20141227/c4d_141229_060128_ooi_g_v1.fits.fz
Exposure 392804, g band, 75.0 sec exposure time, seeing 1.31 arcsec, file decam/CP20141227/c4d_141229_062005_ooi_g_v1.fits.fz
Exposure 392790, r band, 65.0 sec exposure time, seeing 1.37 arcsec, file decam/CP20141227/c4d_141229_055621_ooi_r_v1.fits.fz
Exposure 392803, r band, 65.0 sec exposure time, seeing 1.02 arcsec, file decam/CP20141227/c4d_141229_061829_ooi_r_v1.fits.fz
Exposure 430273, z band, 80.0 sec exposure time, seeing 1.06 arcsec, file decam/CP20150407/c4d_150407_233259_ooi_z_v1.fits.fz
Exposure 430274, z band, 80.0 sec exposure time, seeing 1.22 arcsec, file decam/CP20150407/c4d_150407_233444_ooi_z_v1.fits.fz
The red band z was shot 4 months after g and r band images twice the same day.
By the "SDSS images button" you'll see only the galaxy which was in between the two images of asteroid!
Later, I'll try to identify the asteroid with ra, dec and time. 😃
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by
Ghost_Sheep_SWR
in response to c_cld's comment.
Thank you, that is very usefull information for DECaLS imaging! So the CP number is date of imaging i reckon.
Later, I'll try to identify the asteroid with ra, dec and time
😃 good luck with that, no doubt you'll manage it
Ps 4 months in between 8) , im guessing red image of this asteroid is likely non-existentent then
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Budgieye
moderator
Thank you c-cld.
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c_cld
Small body identification for http://legacysurvey.org/viewer/jpeg-cutout-decals-dr2/?ra=123.9555&dec=19.6847&size=256&pixscale=0.1171875&bands=grz
R.A.=08:15:49.16, Dec.=19 41 10.35
imaged r band (green) on /c4d_141229_055621 (i.e. 2014-12-29 05:56 UT ) and /c4d_141229_061829 (i.e. 2014-12-29 06:18 UT )
The Small Body tool provides a list of small-bodies only (asteroids and/or comets) which are likely contained in the specified field on the specified date/time.
Current Settings
Observation Time [change] : 2014-12-29 05:56 UT
Observer Location [change] : Cerro Tololo-DECam [W84] ( 289°11'36.9''E, 30°10'10.5''S, 2202.7 m )
Search Region [change] : Center at (R.A.=08:15:49.16, Dec.=19 41 10.35), Width=(0:05 x 0 05) dms
Observer Constraints [change] : Mag. Limit=19, Require Mag. Param's.=yes, Two-Pass=yes, Max. Output=20listed:
431 Nephele (1897 DN) Classification: Main-belt #Asteroid, diameter 95.03 km
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Thats cool thanks! W
Would there be any merit to find the correct name for asteroids we encounter in DECaLS?
Maybe additional observation data or identifying unknowns?
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c_cld
in past time:
thread http://www.galaxyzooforum.org/index.php?PHPSESSID=nc8qrn3ism8rq45pa65knv1984&topic=3393.0
and
but pointless for scientific recording purpose!
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