Gespeichert in:
| Hauptverfasser: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2506.01720 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866918042964852736 |
|---|---|
| author | Baines, Ellyn K. Blomquist, Solvay Clark III, James H. Gorney, Jim Maier, Erin Sanborn, Jason Schmitt, Henrique R. Stone, Jordan M. van Belle, Gerard T. von Braun, Kaspar |
| author_facet | Baines, Ellyn K. Blomquist, Solvay Clark III, James H. Gorney, Jim Maier, Erin Sanborn, Jason Schmitt, Henrique R. Stone, Jordan M. van Belle, Gerard T. von Braun, Kaspar |
| contents | We measured the angular diameters of six stars using the 6-element observing mode of the Navy Precision Optical Interferometer (NPOI) for the first time since the early 2000s. Four of the diameters ranged from 1.2 mas to 1.9 mas, while the two others were much smaller at approximately 0.5 mas to 0.7 mas, which are the two smallest angular diameters measured to date with the NPOI. There is a larger spread in the measurements than data obtained with 3- or 4- or 5-element modes, which can be attributed in part to the flux imbalance due to the combination of more than 2 siderostats in a single spectrograph, and also to cross talk between multiple baselines related to non-linearities in the fast delay line dither strokes. We plan to address this in the future by using the VISION beam combiner. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_01720 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Simultaneous Six-way Observations from the Navy Precision Optical Interferometer Baines, Ellyn K. Blomquist, Solvay Clark III, James H. Gorney, Jim Maier, Erin Sanborn, Jason Schmitt, Henrique R. Stone, Jordan M. van Belle, Gerard T. von Braun, Kaspar Solar and Stellar Astrophysics Instrumentation and Methods for Astrophysics We measured the angular diameters of six stars using the 6-element observing mode of the Navy Precision Optical Interferometer (NPOI) for the first time since the early 2000s. Four of the diameters ranged from 1.2 mas to 1.9 mas, while the two others were much smaller at approximately 0.5 mas to 0.7 mas, which are the two smallest angular diameters measured to date with the NPOI. There is a larger spread in the measurements than data obtained with 3- or 4- or 5-element modes, which can be attributed in part to the flux imbalance due to the combination of more than 2 siderostats in a single spectrograph, and also to cross talk between multiple baselines related to non-linearities in the fast delay line dither strokes. We plan to address this in the future by using the VISION beam combiner. |
| title | Simultaneous Six-way Observations from the Navy Precision Optical Interferometer |
| topic | Solar and Stellar Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2506.01720 |