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--- obs:bootes_1 [2008/11/18 18:54] – mates
+++ obs:bootes_1 [Unknown date] (current) – external edit (Unknown date) 127.0.0.1
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 {{:obs:bootes-old1a.jpg?120 |}}
-BOOTES was founded in 1997, with a single dome and a 20 cm Meade LX200 mount, piggybacked with two wide-field lenses with the idea to follow BATSE alerts and to perform automated scans of the sky. These old GRB alerts had large uncertrainities, so only wide-field observation was considered important. Two SBIG ST-8 cameras with Nikkor 50 mm 1:1.2 lenses were used. They had a field of view 16 x 11 degrees, limiting magnitude ~14.0, and were mounted perpendicularly to each other. Obtained images were analyzed with a specialised pipeline designed for an accelerator board Photomate 20 with two signal processors Texas Instruments TMS320C40 [[http://dx.doi.org/10.1007/10853853_113|(Petr Páta et al., 2001)]].
+BOOTES was founded in 1998, with a single dome and a 20 cm Meade LX200 mount, piggybacked with two wide-field lenses with the idea to follow BATSE alerts and to perform automated scans of the sky. These old GRB alerts had large uncertrainities, so only wide-field observation was considered important. Two SBIG ST-8 cameras with Nikkor 50 mm 1:1.2 lenses were used. They had a field of view 16 x 11 degrees, limiting magnitude ~14.0, and were mounted perpendicularly to each other. Obtained images were analyzed with a specialised pipeline designed for an accelerator board Photomate 20 with two signal processors Texas Instruments TMS320C40 [[http://dx.doi.org/10.1007/10853853_113|(Petr Páta et al., 2001)]].
 ===== Instrumentation =====
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 {{ :obs:bootes1b-2008.jpg?200|BOOTES-1B}}
+BOOTES-1B is a 30 cm Meade Schmidt-Cassegrain telescope on a fast slewing Paramount-ME mount, equipped with a FLI CM-8 1536x1024 pixel (Kodak KAF1602) CCD camera. It's primary objective is follow-up of satellite GRB alerts. It can interrupt the ongoing observation,  slew and start acquiring images of the proposed GRB location with a typical delay of 30s after the alert reception. Typical limiting magnitude of the earliest 10-second unfiltered exposures is 15. Later, with longer exposures, a limiting magnitude of about 18 can be achieved.
-BOOTES-1B is a 30 cm Meade Schmidt-Cassegrain telescope on a fast slewing Paramount-ME mount, equipped with an Andor iXon 889 512x512 pixel EMCCD camera. It's primary objective is follow-up of satellite GRB alerts. It can interrupt the ongoing observation,  slew and start acquiring images of the proposed GRB location with a typical delay of 30s after the alert reception. Typical limiting magnitude of the earliest 2-second unfiltered exposures is 15. Later, with 60s exposures, a limiting magnitude of about 18 can be achieved.
+The telescope observes without filters to maximize throughput. Its current configuration with the Meade 1:6.3 focal reducer and the CCD provides an image scale of 1.05”/pixel and a field of view of 26.8'x17.8' (F=1771mm, or f/5.8).
-The telescope observes without filters to maximize throughput.
 Since its installation the telescope has followed 5 GRBs with positive detections. These are GRB 080330, GRB 080413A, GRB 080430, GRB 080603B and GRB 080605.
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 There have been two major downtimes: The first caused by the disastrous mount failure which happened at November 12, 2006 and disabled the telescope for 7 months.
 The second ocurred between July 10, 2008 and August 28, 2008 (1.5 months) due to a dome failure.
 ==== BOOTES-1A ====
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 ===== Weather sensing =====
+As an independent robotic observatory, BOOTES has various devices to sense the weather. Currently, a multi level decision model in order to decide whether to observe or not. The following detectors are used during the decision whether the observation is possible or not.
+  * Manual blocking (implemented, in use)
+  * Rain sensor (implemented, in use)
+  * Weather sensor tower (implemented, intended to use for a humidity alert, not used now)
+  * Cloud-meter (implemented, in use)
+  * Allsky camera (implemented, not integrated into rts2)
+  * Meteosat image processing (implemented, never used)