Merge pull request #76 from desihub/sdss2010atm-filters

add sdss2010 filters which include the atmosphere

CHANGES.rst

@@ -1,7 +1,7 @@
 0.16 (unreleased)
 -----------------
 
- - No changes yet.
+- Add new SDSS filters which include atmospheric extinction (airmass=1.3).
 
 0.15 (2022-01-10)
 -----------------

docs/filters.rst

@@ -35,7 +35,7 @@ Response Functions of the SDSS Imager", The Astronomical Journal, Volume 139,
 Issue 4, pp. 1628-1648 (2010)
 <http://dx.doi.org/10.1088/0004-6256/139/4/1628>`__, and calculated as the
 reference response multiplied by the reference APO atmospheric transmission
-at an airmass 1.3.  See the paper for details.
+at an airmass 1.3. See the paper for details.
 
 The group name ``sdss2010`` is used to identify these response curves in
 ``speclite``. The plot below shows the output of::
@@ -46,6 +46,17 @@ The group name ``sdss2010`` is used to identify these response curves in
 .. image:: _static/sdss2010.png
     :alt: sdss2010 filter curves
 
+We also provide versions of the filters without the atmospheric transmission
+which are identified by the ``sdss2010noatm`` group name and can be visualized
+with this bit of code::
+
+    sdss_noatm = speclite.filters.load_filters('sdss2010noatm-*')
+    speclite.filters.plot_filters(sdss_noatm, wavelength_limits=(3000, 11000))
+
+.. image:: _static/sdss2010noatm.png
+    :alt: sdss2010noatm filter curves
+
+
 DECam DR1 Filters
 -----------------
 
@@ -54,7 +65,7 @@ The DECam DR1 filter curves are documented in `T. M. C. Abbott et al 2018 ApJS 2
 `NOAO DECam page <http://www.ctio.noao.edu/noao/content/DECam-filter-information>`__. These
 represent the total system throughput and average instrumental response across the science CCDs.
 The official curves have arbitrary normalization, but the values used here have reasonable
-normalization factors applied for throughput calculations, provided Douglas Tucker (Jan 2021,
+normalization factors applied for throughput calculations, provided by Douglas Tucker (Jan 2021,
 private communication).
 
 There are two versions of the DR1 curves: ``decamDR1`` with an airmass 1.2 reference atmosphere, and

speclite/data/filters/sdss2010-g.ecsv

@@ -1,4 +1,4 @@
-# %ECSV 0.9
+# %ECSV 1.0
 # ---
 # datatype:
 # - {name: wavelength, unit: Angstrom, datatype: float64}
@@ -8,7 +8,10 @@
 # - {band_name: g}
 # - {airmass: 1.3}
 # - {description: 'SDSS 2.5m telescope reference g-band response function
-#     (with no atmosphere) from Table 4 of:
+#     (through airmass 1.3) from Table 4 of:
+#
+#     Values are the product of the g and atmospheric transmission columns from Table
+#     4 of:
 #
 #     Doi et al, "Photometric Response Functions of the SDSS Imager",
 #
@@ -17,106 +20,106 @@
 #     All response values outside the wavelength range covered here are zero.'}
 # - {group_name: sdss2010}
 wavelength response
-3600.0 0.0
-3620.0 0.0002
-3640.0 0.0015
-3660.0 0.0027
-3680.0 0.0038
-3700.0 0.0035
-3720.0 0.0032
-3740.0 0.0031
-3760.0 0.0037
-3780.0 0.0048
-3800.0 0.0067
-3820.0 0.0115
-3840.0 0.022
-3860.0 0.0353
-3880.0 0.0507
-3900.0 0.074
-3920.0 0.0973
-3940.0 0.1224
-3960.0 0.1484
-3980.0 0.1757
-4000.0 0.2081
-4020.0 0.2404
-4040.0 0.2617
-4060.0 0.2785
-4080.0 0.2954
-4100.0 0.3122
-4120.0 0.329
-4140.0 0.3411
-4160.0 0.3512
-4180.0 0.3603
-4200.0 0.366
-4220.0 0.3717
-4240.0 0.3773
-4260.0 0.383
-4280.0 0.3886
-4300.0 0.3943
-4320.0 0.3999
-4340.0 0.4043
-4360.0 0.4083
-4380.0 0.4122
-4400.0 0.4161
-4420.0 0.42
-4440.0 0.424
-4460.0 0.4279
-4480.0 0.4314
-4500.0 0.4337
-4520.0 0.4359
-4540.0 0.4381
-4560.0 0.4404
-4580.0 0.4426
-4600.0 0.4448
-4620.0 0.447
-4640.0 0.4488
-4660.0 0.4504
-4680.0 0.4521
-4700.0 0.4537
-4720.0 0.4553
-4740.0 0.4569
-4760.0 0.4586
-4780.0 0.4601
-4800.0 0.4611
-4820.0 0.4622
-4840.0 0.4633
-4860.0 0.4644
-4880.0 0.4655
-4900.0 0.4666
-4920.0 0.4677
-4940.0 0.4687
-4960.0 0.4698
-4980.0 0.4709
-5000.0 0.4719
-5020.0 0.473
-5040.0 0.4741
-5060.0 0.4752
-5080.0 0.4762
-5100.0 0.477
-5120.0 0.4765
-5140.0 0.4753
-5160.0 0.4731
-5180.0 0.4704
-5200.0 0.4672
-5220.0 0.4625
-5240.0 0.4512
-5260.0 0.4326
-5280.0 0.3996
-5300.0 0.3429
-5320.0 0.2768
-5340.0 0.2013
-5360.0 0.1397
-5380.0 0.0899
-5400.0 0.0585
-5420.0 0.0398
-5440.0 0.0269
-5460.0 0.0189
-5480.0 0.0136
-5500.0 0.0096
-5520.0 0.0068
-5540.0 0.0051
-5560.0 0.0037
-5580.0 0.0024
-5600.0 0.0013
-5620.0 0.0002
-5640.0 0.0
+3619 0.0
+3620 0.0001132
+3640 0.0008592
+3660 0.00156465
+3680 0.00222756
+3700 0.0020755
+3720 0.00191328
+3740 0.00186837
+3760 0.00224812
+3780 0.00294
+3800 0.00413658
+3820 0.00716565
+3840 0.0138358
+3860 0.0224014
+3880 0.0324683
+3900 0.0478114
+3920 0.0635758
+3940 0.0808574
+3960 0.0991164
+3980 0.118615
+4000 0.142007
+4020 0.165299
+4040 0.181306
+4060 0.194421
+4080 0.207755
+4100 0.221225
+4120 0.234544
+4140 0.244637
+4160 0.253391
+4180 0.261506
+4200 0.267217
+4220 0.272791
+4240 0.278372
+4260 0.284033
+4280 0.289701
+4300 0.295449
+4320 0.301085
+4340 0.305813
+4360 0.310308
+4380 0.314715
+4400 0.31919
+4420 0.32361
+4440 0.328134
+4460 0.332607
+4480 0.336837
+4500 0.340108
+4520 0.343184
+4540 0.346274
+4560 0.349457
+4580 0.352531
+4600 0.355662
+4620 0.358539
+4640 0.361149
+4660 0.363563
+4680 0.366065
+4700 0.368495
+4720 0.37066
+4740 0.37283
+4760 0.375089
+4780 0.377236
+4800 0.378932
+4820 0.380714
+4840 0.3825
+4860 0.384337
+4880 0.386132
+4900 0.387931
+4920 0.389454
+4940 0.390896
+4960 0.392424
+4980 0.393955
+5000 0.395405
+5020 0.396752
+5040 0.398102
+5060 0.399453
+5080 0.400722
+5100 0.401777
+5120 0.401785
+5140 0.401201
+5160 0.399769
+5180 0.397864
+5200 0.395578
+5220 0.392061
+5240 0.382933
+5260 0.36758
+5280 0.33994
+5300 0.292048
+5320 0.236027
+5340 0.17185
+5360 0.119402
+5380 0.0769274
+5400 0.050117
+5420 0.0341126
+5440 0.0230694
+5460 0.0162162
+5480 0.0116756
+5500 0.00824544
+5520 0.00584392
+5540 0.00438498
+5560 0.00318274
+5580 0.00206568
+5600 0.00111943
+5620 0.00017232
+5621 0.0