canuvit 0.3.0

UVIT safety checks

CanUVIT

To check whether a field can be safely observed with UVIT.

You can install the "CanUVIT" Python package using the following command.

pip install canuvit

After installation, you can run canuvit on a Python command prompt or as a script. For example,

>>> import canuvit
>>> canuvit.observe('uvit', '12:12:12', '12:12:12')

Note: In general, canuvit.observe(instrument, RA, DEC). instrument can be either 'uvit', 'sxt', 'czti', or 'laxpc'. RA and DEC are expected to be in sexagesimal format.

You may get an output as shown below. Also, please check the working directory for the output GALEX images with sources marked.

### VIS

ra_hms	dec_dms	mag	B-V	SpecType	VIS3	VIS2	VIS1	ND1	BK7

12:11:52.7568	+12:07:47.532	11.096	0.864	K1	1333.0	124.4	88.6	29.7	1624.9
12:12:22.944	+12:17:23.856	11.126	0.814	K0	1296.7	121.0	86.2	28.9	1580.6
12:11:35.016	+12:12:04.644	11.426	0.451	F5	1457.4	234.9	180.9	32.8	1915.2
12:11:01.656	+12:08:35.916	11.874	0.694	G5	754.3	89.1	69.2	16.8	950.9
12:11:11.5272	+12:03:14.04	12.177	0.322	F0	803.1	143.5	101.4	18.2	1061.7
12:12:05.5368	+12:19:09.768	12.268	0.787	K0	452.9	42.3	30.1	10.1	552.1


Safe filters: ['VIS3', 'VIS2', 'VIS1', 'ND1', 'BK7']


FUV observations seem to be absent! Using M_fuv = M_nuv - 1.65.


### NUV

sl_no     ra_hms       dec_dms      Mag  Mag_corrected silica  b4  b13  b15   n2 
----- ------------- -------------- ----- ------------- ------ ---- ---- ---- ----
    1 12:12:32.3946 +12:07:27.4144 19.32         19.32   1.86 0.41 0.50 0.14 0.10
    2 12:11:11.6503 +12:03:14.7794 16.25         16.25  31.75 6.99 8.57 2.35 1.75
    3 12:12:41.0882 +12:14:58.2679 16.15         16.15  34.66 7.63 9.36 2.56 1.91
    4 12:12:15.3493 +12:29:18.1277 19.50         19.50   1.59 0.35 0.43 0.12 0.09
    5 12:11:35.0116 +12:12:04.7063 16.47         16.47  25.93 5.70 7.00 1.92 1.43



Safe filters in NUV: ['Silica', 'NUV-grating', 'NUV-B4', 'NUV-B13', 'NUV-B15', 'NUV-N2']


### FUV 

sl_no     ra_hms       dec_dms      Mag  Mag_corrected  caf2  baf2 sapphire silica
----- ------------- -------------- ----- ------------- ----- ----- -------- ------
    1 12:12:32.3946 +12:07:27.4144 19.32         17.67  1.65  1.40     1.04   0.36
    2 12:11:11.6503 +12:03:14.7794 16.25         14.60 28.17 23.94    17.75   6.20
    3 12:12:41.0882 +12:14:58.2679 16.15         14.50 30.75 26.14    19.37   6.76
    4 12:12:15.3493 +12:29:18.1277 19.50         17.85  1.41  1.20     0.89   0.31
    5 12:11:35.0116 +12:12:04.7063 16.47         14.82 23.00 19.55    14.49   5.06




Safe filters in FUV: ['CaF2', 'FUV-grating', 'BaF2', 'Sapphire', 'Silica']

Two additional functions are also available which takes the same input arguments as canuvit.observe().

• canuvit.observe_VIS(): to find safe VIS filters.
• canuvit.observe_UV(): to find safe UV filters.

Command Line Interface

Once you have installed it you can access canuvit from the command line using either python -m canuvit or simply canuvit. Here's an example usage:

canuvit -r "12:12:12" -d "12:12:12"

To know about more available options use:

canuvit -h