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VLASS Survey Def. Options

The VLASS (Very Large Array Sky Survey) presents various survey definitions designed for comprehensive astronomical research. The Monolithic options include S-band surveys with coverage of entire skies and specific Galactic regions, achieving sensitivities of 54uJy and 30uJy. The “Shotgun Wedding Cake” configurations offer deeper focal points at very faint levels (1.5uJy) across substantial areas. The Three-Tier approach introduces S-band and Ku-band surveys targeting the Galactic plane, enhancing sensitivity and efficiency. Total project time is projected at ~8800 hours, ensuring broad celestial insights.

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VLASS Survey Def. Options

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  1. VLASS Survey Def. Options • Monolithic (1 tier): • S-band/B-config (BnA for dec. < -10 deg) • 31100 sqdegr. Entire sky > -30 • 54uJy (higher in the plane) Total 8800 hrs • Monolithic (2 tier): • Extragalactic 21500 sq. deg. (S-band/B-array) • 50uJy: 75 > dec > -10 deg. • Galactic: 2800 sq. deg. (S-band/A-config) • 30uJy: +/-5 deg (plane); l +/- 14; b +/- 10sq. deg. (Bulge) • Impact 8800 hrs over 6 years (20% usage/80% efficiency)

  2. VLASS Survey Def. Options • Shotgun Wedding Cake (I) • Deep to 1.5uJy over 6.5 sq. deg. (~2000 hr) • WIDE to 50uJy over 14000 sq. deg. (3203 hr) • Galactic Ku-band (90uJy): l +/- 4 deg 2200 sp. Deg. (2350 hr) Total = ~8800 hr w/oh • Shotgun Wedding Cake (II) • Deep to 1.5uJy over 6.5 sq. deg. (~2000 hr) • WIDE to 50uJy over 14000 sq. deg. (3203 hr) • Galactic: S-band 2800 sq. deg (2350 hr). • 30uJy: +/-5 deg (plane); l +/- 14; b +/- 10sq. deg. (Bulge) Total = ~8800 hr

  3. VLASS Survey Def. Options • Three Tier (Greg): • S band All Sky Survey [SASSY] (dec > -30) • 100uJy/bm (2350 hr) • S band Galactic Plane Survey (dec >-40 ,|b| < 5) / Bulge (dec >- 30, |l| < 14, |b| < 10) • 30uJy/bm (2500 hr) • Ku band Galactic Plane Survey (dec >-40 ,|b| < 5) / Bulge (dec >- 30, |l| < 14, |b| < 10) (GUTS+) • 100uJy/bm (2480 hr)

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