Questions tagged [hubble]
The Hubble Space Telescope (HST) is a space telescope in low Earth orbit with a 2.4 meter main mirror capable of observing near ultraviolet, visible, and near infrared light. It was launched in 1990 and remains in operation (following five servicing missions) as of 2015.
62 questions
7 votes
2 answers
1k views
Does the pistol grip tool also take drill bits and screwdriver bits or only wrench sockets?
I've heard of sockets that the pistol grip tool1 takes, but does it also take bits that let it also be used for drilling and/or driving screws? 1 cf. NASA NTRS 19960025621; A computer controlled ...
- 3,052
11 votes
2 answers
2k views
Hubble gyro manufacturer
I have been trying to find information on Hubble's gyros. So far all I have found is that they are rotating mass rate gyros with gas bearings and that the were the most accurate available when ...
- 1,172
21 votes
1 answer
4k views
What is the goal of the message “astronaut use only” written on one Hubble's module?
On the following image, why is it written “astronaut use only”? Since this power control unit is in space, it can only be used by astronauts. So why write this message? Cropped from this image: ...
- 318
17 votes
2 answers
2k views
HST can apparently operate in one-gyro mode, if need be. Why was the Compton Gamma Ray Observatory de-orbited when it lost one of its three gyros?
If HST has been reduced to 2 fully functioning gyros, I read that they plan to turn off one gyro and run in single-gyro mode to save the second functioning gyro. The Compton Gamma Ray Observatory had ...
- 171
19 votes
3 answers
5k views
Why is the aperture door of the Hubble Space Telescope so weirdly shaped?
Why is the door not rounder? I understand it's main purpose is to block sunlight from entering the telescope. Especially the right side (in the provided image) seems to waste material. But also the ...
- 309
0 votes
1 answer
337 views
What is a spectral shift?
I have to research this topic for a school project and nothing is showing up other than redshifts and blueshifts and Doppler shifts. Are these all under the spectral shift category? Is a spectral ...
- 1
9 votes
1 answer
1k views
What are those yellow trussed structures on Hubble Space Telescope?
Search as I might, I couldn't find them labeled on any schematic or mentioned in any fact sheet. My guess is Shuttle bay interface/attachment, but I also could not corroborate it by searching ...
- 2,463
22 votes
1 answer
6k views
Would the Space Shuttle have been able to carry the Hubble Space Telescope back to Earth had it been necessary?
The development of the Space Shuttle (STS) and the Hubble Space Telescope (HST) were running in parallel during the 1970s and 1980s. Both plans for STS and HST were announced in the late 1960 and both ...
- 14.9k
15 votes
2 answers
4k views
What will now happen with Hubble?
The James Webb Telescope just started it’s scientific work. The amazing pictures and information is definitely better than Hubbles. What will now happen with Hubble?
- 7,095
2 votes
1 answer
416 views
Hubble vs JWST telescope
Can you quantify how much better JWST is compared to Hubble? For instance, from what distance can each "see" (differentiate) a sun-like star? Maybe there are other measures.
- 357
4 votes
2 answers
537 views
Where can I find an up-to-date report on the Hubble Telescope's orbital history and current altitude?
I haven't been able to find a current report on the state of Hubble's orbital decay and I'm hoping someone can direct me to that info. The satellite tracker sites just present an average or estimate ...
- 49
17 votes
1 answer
2k views
What did the Hubble fix look like?
When Hubble was built, there was a defect in the mirror that caused the images to be blurry. Astronauts then went to install extra optics on the telescope to fix the blurriness. What did these extra ...
- 5,138
2 votes
1 answer
195 views
Is it possible to view JWST from Earth or From Hubble Space Telescope?
Being able to view JWST from Far would be a great way to monitor it visually. Considering the large Sun-Shield which is very shiny also, I wander if it is possible to view it from far using Hubble or ...
- 21
4 votes
1 answer
341 views
Are there chances to get a Hubble + ISS Moon transit picture?
I have seen these cool transit pictures where ISS is transiting the moon ISS is transiting the Sun Hubble is transiting the moon I even saw picture of ISS Sun transit during solar Eclipse Tiangong ...
- 383
7 votes
0 answers
223 views
Is the Hubble Space Telescope on its last legs, or "back to normal"?
Hubble was designed to accommodate regular servicing and equipment upgrades while in orbit. Instruments and limited life items were designed as orbital replacement units. Five servicing missions (SM 1,...
user12102