obs_collection = Northern Sky Narrowband Survey obs_description = Estimated variance (square noise) of SII (HiPS simg.de/P/NSNS/DR0_2/sii) normalized to 30" pixels. Use these data to assess the accuracy of the continuum-subtracted SII, which is mainly determined by photon noise, whether from the signal of interest or from contamination. prov_progenitor = Calculated from 5" intermediate data of the Northern Sky Narrowband Survey DR0.2, see http://www.simg.de/nebulae3/dr0_2 obs_copyright = Northern Sky Narrowband Survey by Stefan Ziegenbalg. The material can be freely used and distributed under Creative Commons Attribution-Noncommercial-Share Alike 4.0 license (CC-BY-NC-SA). obs_copyright_url = http://www.simg.de/nebulae3/dr0_2 obs_regime = Optical client_category = Image/Gas-lines/SII client_sort_key = 04267 client_application = AladinDesktop # client_application = AladinLite em_min = 6.717E-7 em_max = 6.730E-7 t_min = 59926 t_max = 60769 # --- generated by hipsgen --- creator_did = ivo://simg.de/P/NSNS/DR0_2/sn-sii hips_creator = S. Ziegenbalg #hips_copyright = Copyright mention of the HiPS obs_title = NSNS DR0.2: Estimated variance of [SII] #obs_ack = Acknowledgement mention #bib_reference = Bibcode for bibliographic reference #bib_reference_url = URL to bibliographic reference hips_builder = Aladin/HipsGen v12.119 hips_version = 1.4 hips_release_date = 2025-06-07T07:57Z hips_frame = equatorial hips_order = 5 hips_order_min = 0 hips_tile_width = 512 hips_status = public mirror clonable hips_initial_ra = 60.0 hips_initial_dec = 60.0 hips_initial_fov = 150.0 hips_pixel_scale = 0.003579 s_pixel_scale = 0.001389 dataproduct_type = image hipsgen_date = 2025-05-17T07:37Z hipsgen_params = in=tmp/sn_s out=./sn_s img=tmp/sn_s/003_003.fits "mode=overlayFading treeMean" order=5 frame=equatorial id=simg.de/P/NSNS/DR0_2/sn-sii "title=Northern Sky Narrowband Survey, DR0.2, Estimated variance of SII" "pixelcut=1 40 sqrt" "datarange=0.8 1.7e6" "creator=S. Ziegenbalg" "target=60 60 150" "status=public master clonable" CLEAN INDEX TILES ALLSKY CHECKCODE DETAILS hips_creation_date = 2025-05-17T07:37Z hips_pixel_bitpix = -32 data_pixel_bitpix = -32 hips_sampling = bilinear hips_overlay = overlayFading mergeOverwriteTile treeMean hips_tile_format = fits hips_pixel_cut = 1 40 hips_data_range = 0.8 1700000 moc_sky_fraction = 0.6466 hips_estsize = 11055667 hips_nb_tiles = 10729 hips_check_code = fits:1794725865 hipsgen_date_1 = 2026-02-25T15:33Z hipsgen_params_1 = in=https://www.simg.de/nebulae3/dr0_2/sn_sii out=./ MIRROR