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Questions tagged [dscovr]

NOAA's & USAAF Deep Space Climate Observatory for monitoring space weather.

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Why is DSCOVR in a Lissajous orbit instead of a halo orbit (to stay out of Sun exclusion zone)?

Halo orbits are a sub-class of Lissajous orbits. See this answer for (much) more on that. DSCOVR's orbit will put it in it's Sun Exclusion Zone in about 2020 where the communications line of sight ...
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Why did DSCOVR increase its pictures rate on February 3rd 2018?

On February 3rd for some reason NASA tuned up DSCOVR to send images of the Earth every 20min instead of the regular 2 hours interval. Last time they did this was for the great USA solar eclipse, in ...
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1answer
176 views

How could the recently explained “glints” seen by DSCOVR appear so compact considering the finite size of the sun?

The discussion section of the very recent, on-line-available Terrestrial glint seen from deep space: oriented ice crystals detected from the Lagrangian point Alexander Marshak, Tamás Várnai and ...
4
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1answer
481 views

Now what do we think? Is this purple dot really caused by Cassegrain optics and coherent backscattering?

EDIT: The stories in Phys.org NASA's EPIC view spots flashes on Earth and Live Science Mysterious Light Flashes 1st Spotted by Carl Sagan Explained seems to have information potentially relevant to ...
2
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4answers
407 views

Why does DSCOVR's camera EPIC see at least 13 sunrises and sunsets per day?

In this NASA Goddard YouTube video titled "One Year on Earth – Seen From 1 Million Miles", I've gotten stuck on the line In this view, EPIC sees the Sun rise in the west, and the Sun set in the ...
5
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1answer
177 views

How did DSCOVR use its ten thrusters for the long burn maneuvers MCC and LOI?

From this answer to my previous DSCOVR question, and this and this and this article, it seems that DSCOVR used one or more of its ten thrusters for the long burns for mid course correction (MCC) and ...
5
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1answer
196 views

What is the Distinction between DSCOVR's “engines” and “thrusters”?

I am reading this article about DSCOVR which links (ref 16) to this: DSCOVR: Mission Success for Moog Engines Over a Decade Later , about the recertification by MOOG of the MONARC 5N monopropellant ...
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1answer
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Why is there a purple dot in the middle of this EPIC image?

On 29 July 2015, NASA released a second image from the Earth Polychromatic Imaging Camera (EPIC) on the Deep Space Climate Observatory (DSCOVR) satellite: If you zoom in on the full image, you will ...
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1answer
207 views

What is the timeliness of DSCOVR-EPIC image acquisition and public release?

One of the original ideas behind what became the NOAA Deep Space Climate Observatory (DSCOVR) was to to provide a live feed of the Earth from L-1. DSCOVR-EPIC photo released 20 July The Earth ...
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1answer
627 views

Why has no TLE been published for the DSCOVR satellite and the Falcon 9 R/B?

So, usually a few days after every launch, I go out and check out the published TLE data for each satellite, made public courtesy of CelesTrak. It generally includes all the orbital parameters for ...
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272 views

How can we track where DSCOVR is now?

Celestia supports importing spacecraft data, but I didn't see any data for DSCOVR. Is there any way to see where it is now so we can track it on it's way to Sun-Earth L1?
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Why does DSCOVR appear to be missing solar cells?

In recent photos of DSCOVR I've noticed it appears to be missing eight solar cells in its array. In photos from the original "unboxing" from storage it appears to have all its cells. Why is this?
7
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2answers
572 views

What plane will DSCOVR’s orbit be in?

According to the “NASA Earth Science Instruments” section of noaa.gov's DSCOVR page, DSCOVR will make unique space measurements from the first sun-Earth Lagrange point (L1). ... 1.5 million ...