Teide Observatory

IAC80 Telescope

IAC80
IAC80
Location
Diameter
Ø 82.00 cm
State
Operation year
1993
Observatory

The IAC80 telescope, setted for observations in the optical, was fully designed and built by the Instituto de Astrofísica de Canarias (IAC) and it was the first of its class developed in Spain. In 1980 the IAC started its development and was finally installed at the OT in 1991. This telescope has an equatorial german mount, with an effective focal ratio of f/11.3, effective focal length of 9.02 m and a primary mirror of diameter 82 cm. The instrumentation is installed at its Cassegrain primary focus.

The IAC80 telescope is an ideal telescope for long-term programmes, collaborations with other telescopes, urgent observations in service or ToO observation modes, student practices and observational or instrumental test-bed. IAC80 is a key part of the Teide Observatory because of its versatility and availibity.

La instrumentación de uso común del IAC-80, a partir de 2.005, es una cámara CCD de 2.048x2.048 píxeles, cada uno de ellos con un tamaño de 13,5x13,5 micras/píxel, equivalentes en el cielo a 0,33 segundos de arco por píxel. Por tanto, el campo de observación corresponde a 10,6 minutos de arco. Este detector dispone de dos canales de lectura, y es sensible en todo el rango visible. La CCD utiliza un sistema de refrigeración de ciclo cerrado que lleva su temperatura hasta -100º C. Otro instrumento que se instala frecuentemente en el IAC-80 es la cámara TCP (Tromsoe CCD Photometer), un instrumento portátil optimizado para fotometría de lectura rápida basado en tecnología CCD. El TCP se construyó en el Departamento de Física de la Universidad de Tromsoe (Noruega), en colaboración con el CUO (Copenhagen University Observatory).

IAC80 Filters

The list of filters is currently under revision

Available filters for CAMELOT

Interferential filters:

IAC No.

Spectral Range

CWL[nm]

Width[nm]

Tmax(%)(1)

Transmission

Cosmetic(2)

Size(3)

Name(4)

IAC No.

    jpg ascii
73 312.7 4 65.2

V – H

 

V – H

new 50L n73 73
77 330.9 4.3 52.4

V – H

V – H

new 50L n77 77
22 [OII] cont. 365.8 5 57.2 V – H

V – H

(*) 50D n22[OII]ct 22
4 [OII] 372.5 5 54.2

V – H

V – H

new 50D n4[OII] 4
76 [NeIII],OII, Heps 397.3 6.9 61.1

V – H

V – H

new 50Lx8 n76[NeIII] 76
14 460.9 5 78.2

V – H

V – H

new 60D n14 14
15 HeII 463.3 5 78.3

V – H

V – H

det(O) 60D n15HeII 15
80 HeII 468.3 3 76

V – H

V – H

new 60Dx6 n80HeII 80
66 [ArIV], [FeIII] 475.3 3 60.5 C C new 50D n66[ArIV] 66
5 Hß cont. 484.1 3 78.3

V – H

V – H

new 60D n5Hbct 5
10 486.5 3 79.3

V – H

V – H

new 60D n10Hb 10
65 487.5 6.2 63.7 C C new 50Dx6 n65Hb 65
13 Hß red 490.1 5 66

V – H

V – H

new 60D n13Hbred 13
1 Hß red. 493.5 4 80.7

V – H

V – H

new 60D n1Hbred 1
6 [OIII] 500.8 3 76.7

V – H

V – H

new 50Dx6 n6[OIII] 6
7 [OIII] red. 502.8 5 80.2

V – H

V – H

det(O) 60D n7[OIII]red 7
3 [OIII] cont. 505.8 5 78.3

V – H

V – H

det(O) 60D n3[OIII]ct 3
33 [OIII] cont. 506.5 2.5 76.3

V – H

V – H

new 60Dx6 n33[OIII]ct 33
9 [OIII] red. 510 5 80.6

V – H

V – H

new 60D n9[OIII]red 9
16 [OIII] red. 514 5 79.2

V – H

V – H

new 60D n16[OIII]red 16
8 [OIII] red. 518 5 66.5

V – H

V – H

new 60D n6[OIII]red 8
21 [OIII] red. 522 5 84

V – H

V – H

det(O) 60D n21[OIII]red 21
11 [OIII] red. 525 0.5     det(O) 60D n11[OIII]red 11
18 545.7 5 71.5

V – H

V – H

new 60D n18 18
28 606.1 19.7 92.1

V – H

V – H

new 60Dx7 n28 28
38 [OI] cont. 625.8 2.9 89.5

V – H

V – H

new 60Dx7 n38[OI]ct 38
37 [OI] 630.8 2.9 87.8

V – H

V – H

new 60Dx7 n37[OI] 37
27 Ha cont. 650.7 5 84.7

V – H

V – H

new 60Dx7 n27Hact 27
40 Ha 656.7 0.8 60

V – H

V – H

scrat 50Dx6 n40Ha 40
20 Ha+[NII] 657.1 5 91.1

V – H

V – H

    n20Ha[NII] 20
68 Ha 657.6 9.6 63 C C new 50Dx6 n68Ha 68
12 Ha red. 661.1 5 88.7

V – H

V – H

(*) 60D n12Hared 12
24 Ha red. 664.7 5 90.2

V – H

V – H

new 60Dx7 n24Hared 24
19 Ha red. 668.7 5 92.9

V – H

V – H

(*) 60D n19Hared 19
32 [SII] 671.7 0.8 65.9

V – H

V – H

scrat 60Dx5 n32[SII] 32
17 [SII] 672.3 5 92.5

V – H

V – H

new 60D n17[SII] 17
34 [SII] 673.5 1.1 59.7

V – H

V – H

new 60D n34[SII] 34
39 Ha red. 676.3 4.9 92.7

V – H

V – H

new 60Dx7 n39Hared 39
31 Ha red. 680.3 5 93.2

V – H

V – H

new 60Dx5 n31Hared 31
30 Ha red. 684.8 5 87.5

V – H

V – H

new 60Dx7 n30Hared 30
36 Ha red. 689.1 5 91.5

V – H

V – H

new 60Dx7 n36Hared 36
35 Ha red. 692.9 4 92

V – H

V – H

new 60Dx7 n35Hared 35
2 Ha red. 697.2 5 92.3

V – H

V – H

new 60D n2Hared 2
29 701.5 5 92.1

V – H

V – H

new 60Dx7 n29 29
74 744.2 13.9 90.2

V – H

V – H

(*) 50L n74 74
85 750 Cont 749.25 11.5 87.5

 

  new 50D n85con 85
78 K 769.1 24.3 95.5

V – H

V – H

new 50L n78K 78
83 K (LGS-OGS) 769.1 10 ?     new 50Lx6 n83K 83
75 779.8 24.9 91.3

V – H

V – H

new 50L n75 75
81 824 Ch4blue 823.6 13.2 81.2

V – H

V – H

new 50Lx6 n81_824 81
84 890 Ch4cen 890.25 12.5 86     new 50D n84_890 84
82 914 Ch4red 913.8 13.5 90.4

V – H

V – H

new 50Lx6 n82_914 82
25 [SIII] cont. 948.1 3 84.3

V – H

V – H

new 60Dx6 n25[SIII] 25
23 [SIII] 952.9 3 81.8

V – H

V – H

new 60Dx6 n23[SIII]

23

round filter

(1) All these are circular filters 60mm diameter or 50mm side (square) or diameter (round). The transmission of each filter was measured by sampling in two different lines, horizontal and vertical, crossing the center filter to detect possible irregularities. Data were taken every 5 mm. Sampling took place in the whole visible range over a certain length at the ends to evaluate their performance. The sampling interval was 0.1 nm and a bandwidth of 0.3 nm (except for IAC # 26, which was 0.5 nm, and IAC IAC # 32 and # 34, with a sampling of 0 , 02 nm with a bandwidth of 0.07 nm). The transmission measured is ratiometric, that is, no corrections were applied onphotopic or scotopic correction curves. The measurement temperature for all filters was 20 º C.

(2) (det) label indicates that filter is somewhat damaged and is going to be replaced soon, (O) label indicates that a new filter have been requested, (scrat) label indicates that the filter is somewhat scratched.

(3) 50L: squared filters 50mm side.

50D: circular filter of 50mm diameter (proper for FASTCAM).

60D: circular filters 60mm diameter.

Filter thickness is indicated only if it is larger than 5mm.

(4) Filter name in the image header.

(*) Please, contact with GAS (ttnn_a [at] iac.es) if you want to use these filters.

  • Johnson/Bessell (size: 50L)

 

Name

CWL [nm]

Width [nm]

Tmax (%)

Transmission (ASCII)

U 365.75 57.70 64.77 U
B 433.45 97.50 71.17 B
V 537.40 84.60 86.75 V
R 627.25 127.30 82.04 R
I 872.20 298.00 93.70 I
  • SDSS

Name

CWL [nm]

Width [nm]

Tmax (%)

Transmission (ASCII)

u’ 305.05 62.30 79.28 u’
g’ 475.80 143.40 90.21 g’
r’ <623.10 142.60 94.96 <r’
i’ 770.60 156.40 92.68 i’
z’ 966.20 267.60 96.62 z’
  • STROEMGREN

Filter

CWL [nm]

Width [nm]

Tmax (%)

Transmission (JPG)

U

346,75

31,5 83,68 U
V 412,00 20 91,52 V
B 465,5 17,0 89,52 B
Y 544,75 23,5 91,90 Y

 

Filters for TCP

Image removed.

 

Name

CWL [nm]

Width [nm]

Tmax (%)

   

U

364.25 57.50 66.87 U U
B 431.75 98.50 68.00 B B
V 532.25 85.50 90.29 V V
R 631.00 < 122.00 78.45 R R
I 881.50 312.00 83.61 I I

The observers must contact their support astronomer some months before their run to indicate any spetial filter requirements. The filter wheel is inside the cryostat, so once the cryostat is closed it will not be opened again until the camera is carried down to the IAC’s workshops at La Laguna.

The IAC80 has other important utilities for the development of astronomical research. Among them, it is worth mentioning that it is a testing site for instrumentation of other large telescopes, (like Gran Telescopio CANARIAS), as well as being used for the atmospheric characterization of the Canarian Observatories, together with other telescopes (TCS and OGS). Finally, a great number of students from different European universities, (not only from the University of La Laguna), carry out their first observations with this telescope.

Many important astronomical observations have been carried out on the IAC80 and the scientific output has been consolidated with more than 100 refereed publications in international journals. The observing projects at the IAC80 include a wide range of targets, from the nearest objects, such as the monitoring of the most important comets in recent years, including the crash of comet P/Shoemaker-Levy against Jupiter, to the most remote ones, such as quasars or gravitational lenses. Among the most outstanding results, have been the discovery of Teide 1 -the first known star-like brown dwarf-, the monitoring during ten years of a gravitational lens that has given information on the dark matter in the universe, and the images of the celestial body responsible for a violent gamma ray burst, one of the most intense energetic bursts in the Universe.

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