Cannot find file /Users/cbritt/Documents/anniversary images/31/HST_31_primary.pdf0Assigned ID: 1301
----- Attempting Submission 1 (Fri Oct 16 20:28:33 GMT 2020) -----FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browser
FLASH level may be too high for this exposure or a long subexposure. See extended explanation in the diagnostic browserIn this resubmission, I increased the FLASH levels of the two shortest exposures based on advice from our Contact Scientist. -- Max Mutchler.-335038411----- Attempting Submission 1 (Tue Oct 27 13:22:25 GMT 2020) -----
----- Attempting Submission 2 (Fri Oct 30 16:01:57 GMT 2020) -----
----- Attempting Submission 3 (Thu Dec 03 15:54:57 GMT 2020) -----
----- Attempting Submission 4 (Mon Dec 07 20:42:32 GMT 2020) -----
----- Attempting Submission 5 (Wed Jan 13 18:42:40 GMT 2021) -----
----- Attempting Submission 6 (Mon Feb 08 16:10:39 GMT 2021) -----We are intentionally elevating the FLASH level on advice from our Contact Scientist.Imaging of AG CarWe propose to obtain WFC3 imaging of the Luminous Blue Variable AG Car, and the nebula around it, with 3 medium or broadband filters to image the reflection nebula, as well as the Ha+NII narrowband filter to image the gas around AG Car.We will obtain high signal-to-noise (S/N) imaging of the Luminous Blue Variable AG Car with new broad, medium and narrow band observations from UV to NIR to image the wind outflow and dust reflection nebula using the WFC3/UVIS instrument using the F275W, F547M, F657N, and F845M filters. These new images will complement existing archival observations in F547M and F658N taken with the PC chip of WFPC2. We will obtain new high S/N observations in F657N with WFC3/UVIS to increase the poor S/N of imagery that exists in the archival data as well as add to the outlying nebula which fell off of earlier PC chip exposures. We will also obtain new high S/N observations in F547M, a line-free filter which will show the dust scattering continuum. To better image the structure of the dust in the reflection nebula and maximize the slight color differences in scattered light caused by differences in the dust, we will obtain new medium band observations in F275W and F845M, which are both regions selected for containing no or few emission lines which trace the hot gas rather than scattering dust. The UV capabilities of Hubble will provide a long lever-arm to extract subtle color differences in the scattered light. The bright star in the center of the nebula poses a challenge in reconstructing a public-quality image for release as the bleed trails from the saturated central star will be significant. To mitigate this, we request to schedule observations in both January and February, allowing the instrument to rotate between observations and sending the bleed trail to different parts of the nebula. In this way, images from each epoch can be combined and the bleed trails removed without losing detail in the nebula. In addition to archival F547M and F658N imaging, there exist archival FOS spectra and IUE spectra of AG Car and its nebula, which can be used to help guide exposure time calculations for F275W observations. AG Car is 10x timesfainter at 2800A than the frequently observed Eta Car, which was featured in a press release using F280N imaging in July, 2019. This suggests that the brightness difference is almost entirely due to the distance, as AG Car is 3x further away. Eta Car was observed with 3930s in F280N, which is 10x narrower than F275W. We here propose to use 4 orbits in F275W, two in January and two in February, to obtain a high S/N image of AG Car in F275W. The archival images in F658N totaled 1200s. Archival F547M images total 4200s. An additional 3 orbits each in January and in February for F547M, F657N, and F845M, would provide high S/N images in each filter and extend the coverage of the outer nebula which fell off the PC chip in archival observations. 6 orbits for optical observations in F547M, F657N, and F845M and 4 orbits for F275W gives a total of 10 orbits. Scheduling windows for AG Car are in early January and late February. In order to best treat the large bleed trails from the central star in the final image, we request to do half of our orbits in January and half in late February, so that the angle of the detector on the sky changes and takes the bleed trail (and large diffraction spikes) to another location in the nebula, allowing the data from one month to fill in the resulting gap in the other.Technical Implementation team:
Dr. Chris Britt is an Outreach Scientist in the Office of Public Outreach at STScI and has worked on planning and product development for past HST anniversary images, as well as a variety of outreach products for the Hubble and Webb missions and NASA's Universe of Learning.
Max Mutchler has worked with Hubble's cameras as a member of the STScI Instruments Division, and has conducted many observations with them including Hubble anniversary and Hubble Heritage imaging.
Joe DePasquale is the Senior Science Visuals Developer for the Office of Public Outreach at STScI and has worked on every Hubble anniversary image for the past 4 years.
Alyssa Pagan is a Science Visuals Developer in the Office of Public Outreach at STScI and has provided public release images with Hubble data for multiple news releases since joining OPO.
Outreach Products team:
Dr. Quyen Hart is an Outreach Scientist at the Office of Public Outreach at STScI and works on a wide variety of products for Hubble, Webb, and Roman and for NASA's Universe of Learning.
Holly Ryer is a Senior Education Specialist at the Office of Public Outreach at STScI and has worked on a wide variety of outreach products for Hubble and Webb.
Christine Pulliam is the news branch manager at STScI and oversees news releases across the institute's portfolio.
Cheryl Gundy is the Deputy News Chief at STScI and writes many of Hubble's press releases.
Ray Villard is the HST News Chief at STScI and has been with the institute since before Hubble launched.
Elizabeth Rafferty is a Project Manager for PMO at STScI and keeps the team on schedule and organized.Stellar Physics and Stellar Types6falseSUPPORTEDSTARLUMINOUS BLUE VARIABLEThis object was generated by the targetselector and retrieved from the SIMBAD database.J2000J2000WFC3/UVISImagingNoNoF275WWFC3/UVISImagingNoNoF547MWFC3/UVISImagingNoNoF845MWFC3/UVISImagingNoNoF657NWFC3/UVISImagingNoNoF275WWFC3/UVISImagingNoNoF547MWFC3/UVISImagingNoNoF657NWFC3/UVISImagingNoNoF845MPOS-TARGDITHER2.5LINEfalsefalse486LINE4falsePOS-TARGDITHER2.5LINEfalsefalse386LINE5falsePOS-TARGDITHER2.5LINEfalsefalse286LINE6falseThe scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.1609690488000309.0(Tic-Visit
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