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가시광선 및 적외선 파장 천문간섭계 목록

위키백과, 우리 모두의 백과사전.

다음은 현재 존재하는 천문학적 광학 간섭계 (즉, 가시광선에서 중적외선 파장까지 작동)의 목록 및 그 성능에 관한 매개변수 일부이다.

지상 간섭계의 현재 성능[편집]

2-5열은 관찰할 수 있는 표적의 범위와 수행할 수 있는 과학의 영역을 결정한다. 더 높은 한계 등급은 어레이가 더 희미한 소스를 관찰할 수 있음을 의미한다. 한계 등급은 대기 관측, 망원경의 직경 및 시스템에서 손실된 빛에 의해 결정된다. 더 넓은 범위의 기준선은 더 넓은 범위의 광원에 대하여 더 다양한 영역의 과학에서 수행할 수 있음을 의미한다.

열 6-10은 어레이에 의하여 얻을 수 있을 것으로 예상되는 과학 데이터의 대략적인 품질과 총량을 나타낸다. 이는 연간 데이터로 각 어레이가 운영되는 구름 없는 야간 일수의 평균 값을 설명한다.

Current Performance of Existing Astronomical Interferometers
Interferometer and observing mode Waveband Limiting magnitude Minimum baseline (m)

(un-projected)
Maximum baseline (m) Approx. no. visibility measurements per year

(measurements per night x nights used per year)
Max ratio of no. phase / no. amplitude measurements

(measure of imaging performance, 0 = none)
Accuracy of amplitude2 measurements Accuracy of phase measurements

(milli-radians)
Number of spectral channels

(max in use simultaneously)
Operational? Comments
CHARA Array[1] V, R, I, J, H, K 8 34 330 7500 0.7 1% 10 30000 Yes 30000 in the visible band; maximum baseline 330-m
COAST visible R, I 7 4 60 2000 0.5 4% 10 4? Closed 300 cloudy nights per year, maximum baseline 100-m
COAST infrared J, H 3 4 60 100 0.5 20% 10 1 Closed 300 cloudy nights per year, maximum baseline 100-m
GI2T visible R, I 5 10 65 2000 0 10% - 400? Closed CLOSED in 2006
IOTA J, H, K, L' 7 6 30 10000 0.3 2% 10 1? Closed Integrated optics beam combiner. CLOSED.
ISI N 0 10 50 5000 0.3 1% 1 1000 Closed Maximum baseline 70-m
Keck Interferometer H, K, L, N 10.3 85 85 1000 0 4% 1 330 Closed Nulling Key Science Underway - No imaging on a single baseline instrument; maximum baseline 11-m. CLOSED.
Keck Aperture Masking J, H, K, L 2 0.5 9 20000 0.9 20% 10 1 CLOSED.
MIRA 1.2 R, I 3 30 30 500 0 10% - 1 Closed Mid-Infrared
Navy Precision Optical Interferometer(NPOI) V, R, I 6 5 97 (operational)

432 (not yet commissioned)

50000 0.7 4% 10 16 Yes at Lowell Observatory

12cm siderostats operational

3 x 1.0m apertures being added

World's largest optical baseline-437m

6-phased

Palomar Testbed Interferometer[2] J,H,K 7 86 110 50000 0 2% 0.1 5,10 Closed "dual-star" capable , No imaging on a single baseline instrument. CLOSED 2009.
SUSI B, V, R, I 5 5 160 (operated)

640 (never commissioned)

5000 0 4% 10 21 Closed No imaging on a single baseline instrument; Maximum baseline 160m
VLTI

+UTs AMBER
J, H, K simultaneously 7 46 130 400 0.3 1% 10 2000 Yes Used for a few weeks per year. Longest overall VLTI Baseline 130m
VLTI

+ATs AMBER
J, H, K simultaneously 4 46 130 400 0.3 1% 10 2000 Yes Longest overall VLTI Baseline 130m
VLTI

+UTs VINCI
K 11 46 130 400 0 >1% - 1 Yes Integrated optics beam combiner. Longest overall VLTI Baseline 130m
VLTI

+ATs VINCI
K Never checked 12 200 400 0 >1% - 1 Yes Longest overall VLTI Baseline 130m.
VLTI

+UTs MIDI
N 4.5 46 130 200 0 10% - 250 Yes Used for a few weeks per year. Longest overall VLTI Baseline 130m. Dismantled Apr 2015
VLTI

+ATs MIDI
N 4.5 ? 200 200 0 10% - 250 Yes VLTI inldes World's largest unfilled apertures (siderostats, 1.8-m, 8-m). Longest overall VLTI Baseline 130m. Dismantled Apr 2015

새로운 간섭계 및 기존 간섭계의 개선 사항[편집]

Expected Future Performance of Astronomical Interferometers
Interferometer and observing mode Waveband Limiting magnitude Minimum baseline (m)

(un-projected)
Maximum baseline (m) Approx. no. visibility measurements per year

(measurements per night x nights used per year)
Max ratio of no. phase / no. amplitude measurements

(measure of imaging performance, 0 = none)
Accuracy of amplitude2 measurements Accuracy of phase measurements

(milli-radians)
Number of spectral channels

(max in use simultaneously)
Comments
LBTI

(near infrared)
J, H, K >20 0 22 10000000 1 30% 100 100? 2006?
MRO R, I, J, H, K 14 7 400 100000 0.6 1% 10 1000? Under Construction
VLTI

(near infrared using 4 ATs and PRIMA)
J, H, K 12 8 200 10000 1 1% 0.1 4000? decommissioned 2014
VLTI

(near infrared using 3 UTs and PRIMA)
J, H, K 14 46 130 500 1 1% 0.3 4000? decommissioned 2014
VLTI

(near infrared using 4 UTs and MATISSE)
J, H, K, N, Q commissioning 2017?

같이 보기[편집]

각주[편집]

  1. T.A. ten Brummelaar; 외. (2005). “First Results from the CHARA Array. II. A Description of the Instrument”. 《Astrophysical Journal》 628 (1): 453. arXiv:astro-ph/0504082. Bibcode:2005ApJ...628..453T. doi:10.1086/430729. 
  2. M.M. Colavita; 외. (1999). “The Palomar Testbed Interferometer”. 《Astrophysical Journal》 510 (1): 505. arXiv:astro-ph/9810262. Bibcode:1999ApJ...510..505C. doi:10.1086/306579. 

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