Sneaky BD

https://www.legacysurvey.org//viewer/?ra=26.1373&dec=-54.9295&layer=des-dr1&zoom=16

A nice T dwarf hiding in front of a star :wink:

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Cool! I think you can almost see its proper motion in the z-band single exposures (in LS-DR9)

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That wouldnt surprise me, its quite fast. Around 500 mas/yr. Definitely smeared in both DES and Legacy DR9 due to the proper motion. I’m just quite impressed that a ~T6 is visible in DR9 at all!

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Cool!
Although WISE’s resolution is quite low, I think you can still see its movement in BYW:
http://byw.tools/wiseview#ra=26.137&dec=-54.9295&size=120.000&band=3&speed=200&minbright=-50.0000&maxbright=500.0000&window=0.5&diff_window=1&linear=1&color=&zoom=9&border=1&gaia=0&invert=1&maxdyr=0&scandir=0&neowise=0&diff=0&outer_epochs=0&unique_window=1&smooth_scan=0&shift=0&pmra=0&pmdec=0&synth_a=0&synth_a_sub=0&synth_a_ra=&synth_a_dec=&synth_a_w1

That tool is called wiseview :slight_smile: and yes, that’s where I initially found it!

Difference imaging makes the motion most clear http://byw.tools/wiseview-v3#ra=26.1376462&dec=-54.9293171&size=100&band=3&speed=100&minbright=-50.0000&maxbright=102.2728&window=0.75&diff_window=5.00278&linear=1&color=&zoom=7.5&border=0&gaia=1&invert=1&maxdyr=0&scandir=0&neowise=0&diff=1&outer_epochs=0&unique_window=1&smooth_scan=0&shift=0&pmra=0&pmdec=0&synth_a=0&synth_a_sub=0&synth_a_ra=&synth_a_dec=&synth_a_w1=&synth_a_w2=&synth_a_pmra=0&synth_a_pmdec=0&synth_a_mjd=&synth_b=0&synth_b_sub=0&synth_b_ra=&synth_b_dec=&synth_b_w1=&synth_b_w2=&synth_b_pmra=0&synth_b_pmdec=0&synth_b_mjd=

Ah, nice. :slight_smile: