Hubble Replacement?

As Hubble is phased out is there any plan for a replacement -- or do
ground-based telescopes now show the most promise?

wrote in
oups.com:

As Hubble is phased out is there any plan for a replacement -- or do
ground-based telescopes now show the most promise?

The James Webb Space Telescope is under development for a 2011 launch. It
is not an exact HST replacement; it is intended for infrared astronomy
while HST excels in visible light and ultraviolet.

There are a number of proposals to use HST spare parts to build a
replacement, the most prominent being Johns Hopkins' Hubble Origins Probe
(HOP).

Ground-based telescopes can match HST in some ways using adaptive optics,
but there are some things HST does (such as UV) that ground-based
telescopes will never be able to do.

--
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On Sat, 02 Apr 2005 14:10:13 -0600, "Jorge R. Frank"
puked:

wrote in
roups.com:

As Hubble is phased out is there any plan for a replacement -- or do
ground-based telescopes now show the most promise?

The James Webb Space Telescope is under development for a 2011 launch. It
is not an exact HST replacement; it is intended for infrared astronomy
while HST excels in visible light and ultraviolet.

There are a number of proposals to use HST spare parts to build a
replacement, the most prominent being Johns Hopkins' Hubble Origins Probe
(HOP).

Ground-based telescopes can match HST in some ways using adaptive optics,
but there are some things HST does (such as UV) that ground-based
telescopes will never be able to do.

Don't forget loooooooonnnng exposure times.
--
lab~rat :-)
Do you want polite or do you want sincere?

Ground-based telescopes can match HST in some ways using adaptive optics,
but there are some things HST does (such as UV) that ground-based
telescopes will never be able to do.
Don't forget loooooooonnnng exposure times.

Nope. Nobody does single long exposures anyway - that happens later on in
the computer. And ground-based telescopes routinely do several-hour integrations.

Jan

On Thu, 21 Apr 2005 13:42:28 +0200, Jan Vorbrüggen wrote:

Ground-based telescopes can match HST in some ways using adaptive optics,
but there are some things HST does (such as UV) that ground-based
telescopes will never be able to do.
Don't forget loooooooonnnng exposure times.

Nope. Nobody does single long exposures anyway - that happens later on in
the computer. And ground-based telescopes routinely do several-hour integrations.

Is the raw data from "all" exposures routinely saved over the years? A
particular target that is observed this year, last year, 10 years ago?


--
Craig Fink
Courtesy E-Mail Welcome @

Is the raw data from "all" exposures routinely saved over the years? A
particular target that is observed this year, last year, 10 years ago?

In the case of the HST, I'm pretty sure you can get the raw data even
from the first images. At least semi-recent stuff is regularly re-processed
when, for instance, new algorithms for defect removal etc are implemented
or just the calibration constants improved. As computer storage is not a
big cost factor anymore, and the raw data is only a small fraction of all
the data in any case, I can't imagine anybody not archiving the raw data
"just in case".

Jan