Kepler-Sternwarte Linz - Revision history

GuentherWuchterl: /* Results */

2017-03-17T16:51:13Z

‎Results

GuentherWuchterl at 14:53, 17 March 2017

2017-03-17T14:53:10Z

GuentherWuchterl at 14:52, 17 March 2017

2017-03-17T14:52:43Z

GuentherWuchterl at 14:48, 17 March 2017

2017-03-17T14:48:43Z

GuentherWuchterl at 14:45, 17 March 2017

2017-03-17T14:45:21Z

GuentherWuchterl: /* Problems */

2017-03-17T14:33:29Z

‎Problems

HerbertRaab at 12:37, 19 September 2014

2014-09-19T12:37:08Z

HerbertRaab at 22:42, 8 August 2014

2014-08-08T22:42:11Z

HerbertRaab at 17:28, 8 August 2014

2014-08-08T17:28:02Z

HerbertRaab at 13:19, 5 August 2014

2014-08-05T13:19:59Z

@@ Line 101: / Line 101: @@
 *[http://dc.zah.uni-heidelberg.de/lightmeter/q/weather/form?__nevow_form__=genForm&date__day=1&date__month=1&date__year=2010&time=00%3A00%3A00&within=720&stationId=AT_LINZ_1&_DBOPTIONS_ORDER=&_DBOPTIONS_LIMIT=100&_FORMAT=HTML&submit=Go Query data at the GAVO data center] (Change parameters as necessary. Don't foget to select 'AT_LINZ_1' or 'AT_LINZ_2'&nbsp;for the Staion ID.)
 *[http://dc.zah.uni-heidelberg.de/lightmeter/q/data/static/AT_LINZ_1/ Directory listing]&nbsp;(AT_LINZ_1, from 2009-04-21 to 2014-06-29)
-*[http://dc.zah.uni-heidelberg.de/lightmeter/q/data/static/AT_LINZ_2/ Directory listing]&nbsp;(AT_LINZ_2, from 2014-06-29)
+*[http://dc.zah.uni-heidelberg.de/lightmeter/q/data/static/AT_LINZ_2/ Directory listing]&nbsp;(AT_LINZ_2, from 2014-06-29 to 2014-8-30)
 <gallery>

@@ Line 1: / Line 1: @@
-[[File:Lightmeter at the Kepler Observatory Linz 2017 03 17.jpg|thumb|right The Lightmeter station at the Kepler-Sternwarte Linz on 2017-03-17, after 8 years in operation]]
+[[File:Lightmeter at the Kepler Observatory Linz 2017 03 17.jpg|thumb|The Lightmeter station at the Kepler-Sternwarte Linz on 2017-03-17, after 8 years in operation]]
 [[File:Luxmeter Kepler-Sternwarte 1.jpg|thumb|right]]
 [[File:Luxmeter Kepler-Sternwarte 2.jpg|thumb|right]]
-[[File:Lightmeter Sensor L3 Kepler Observatory 2017-03-17.jpg|thumbnail|The sensor of the Kepler-Sternwarte Lightmeter. Number 3 of the Mark 2.2 prototype series after 8 years.]]
 Link to the old station-page: [http://kuffner-sternwarte.at/hms/wiki/index.php5?title=Kepler-Sternwarte_Linz http://kuffner-sternwarte.at/hms/wiki/index.php5?title=Kepler-Sternwarte_Linz] --[[User:Admin|GW]] ([[User talk:Admin|talk]]) 10:52, 30 June 2014 (CEST)

@@ Line 1: / Line 1: @@
-[[File:Lightmeter at the Kepler Observatory Linz 2017 03 17.jpg|thumb|right]]
+[[File:Lightmeter at the Kepler Observatory Linz 2017 03 17.jpg|thumb|right The Lightmeter station at the Kepler-Sternwarte Linz on 2017-03-17, after 8 years in operation]]
 [[File:Luxmeter Kepler-Sternwarte 1.jpg|thumb|right]]
 [[File:Luxmeter Kepler-Sternwarte 2.jpg|thumb|right]]
 Link to the old station-page: [http://kuffner-sternwarte.at/hms/wiki/index.php5?title=Kepler-Sternwarte_Linz http://kuffner-sternwarte.at/hms/wiki/index.php5?title=Kepler-Sternwarte_Linz] --[[User:Admin|GW]] ([[User talk:Admin|talk]]) 10:52, 30 June 2014 (CEST)

← Older revision		Revision as of 14:48, 17 March 2017
Line 1:		Line 1:
−	[[File:Luxmeter Kepler-Sternwarte 1.jpg\|thumb\|right]] [[File:Luxmeter Kepler-Sternwarte 2.jpg\|thumb\|right]]	+	[[File:Lightmeter at the Kepler Observatory Linz 2017 03 17.jpg\|thumb\|right]]
		+	[[File:Luxmeter Kepler-Sternwarte 1.jpg\|thumb\|right]]
		+	[[File:Luxmeter Kepler-Sternwarte 2.jpg\|thumb\|right]]

	Link to the old station-page: [http://kuffner-sternwarte.at/hms/wiki/index.php5?title=Kepler-Sternwarte_Linz http://kuffner-sternwarte.at/hms/wiki/index.php5?title=Kepler-Sternwarte_Linz] --[[User:Admin\|GW]] ([[User talk:Admin\|talk]]) 10:52, 30 June 2014 (CEST)		Link to the old station-page: [http://kuffner-sternwarte.at/hms/wiki/index.php5?title=Kepler-Sternwarte_Linz http://kuffner-sternwarte.at/hms/wiki/index.php5?title=Kepler-Sternwarte_Linz] --[[User:Admin\|GW]] ([[User talk:Admin\|talk]]) 10:52, 30 June 2014 (CEST)

@@ Line 39: / Line 39: @@
     Background X0 = 6.741 mlx
 </pre>
 === Station History
-==== Problems with at_Linz_1 ====
+=== Station History ===
 There were two problems with Lightmeter in Linz. First, switching the fluorescent lamps on or off inside the observatory building crashes the Luxmeter driver. Second, due to the cable extension needed, the USB connection was unstable. A workaround for the first problem can be achived by setting up the software so that PC reboots every time the driver crashes. The solution for the second problem was found in using a USB-Extender USB-RJ45, which uses a 10m network cable to extend the original Lightmeter cable to the PC, and to use Jörg Weingrill's [[Lightmeter-Driver#Skysensor Software|Skysensor-Software]], which reboots the PC in case of USB errors.
@@ Line 48: / Line 52: @@
 Sometimes, there is apparently a problem with the USB connection, no data is recorded, the Skysensor-Software does display "Error" in the status line, but still does not reboot the PC. On several occasions, this has gone unnoticed for several days, leading to long gaps in the measurements. To avoid this, we have installed a scheduled task which reboots the PC every day at 6:00, 12:00, 18:00 and 23:55 local time.
-=== Replacement of the Computer ===
+==== at_Linz_2 - Replacement of the Computer ====
 Due to increasing downtime of the Lightmeter, the PC runnig Jörg Weingrill's Skysensor-Software under Windows XP has been replaced on 2014-06-29 by a Laptop running the Lightmeter Software under Unbuntu. The laptop was set up by Felix Linhardt. The Station code has been changed from AT_LINZ_1 to AT_LINZ_2 on that occasion.
@@ Line 57: / Line 61: @@
 The Laptop failed in early September 2014 due to a hard disc crash. Unfortnately, all data collected after August 30, 2014 is lost. --[[User:HerbertRaab|HerbertRaab]] ([[User talk:HerbertRaab|talk]]) 14:36, 19 September 2014 (CEST)
 === Light metering network of the state government ===

← Older revision		Revision as of 12:37, 19 September 2014
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	--[[User:HerbertRaab\|HerbertRaab]] ([[User talk:HerbertRaab\|talk]]) 08:52, 1 July 2014 (CEST)		--[[User:HerbertRaab\|HerbertRaab]] ([[User talk:HerbertRaab\|talk]]) 08:52, 1 July 2014 (CEST)
		+
		+	The Laptop failed in early September 2014 due to a hard disc crash. Unfortnately, all data collected after August 30, 2014 is lost. --[[User:HerbertRaab\|HerbertRaab]] ([[User talk:HerbertRaab\|talk]]) 14:36, 19 September 2014 (CEST)

	=== Light metering network of the state government ===		=== Light metering network of the state government ===

@@ Line 5: / Line 5: @@
 === General Description ===
-The Lightmeter (Mark 2.2, S/N L3) at the Kepler-Observatory in Linz, Austria (48° 17' 36.3" North, 14° 16' 06.0" East [http://maps.google.de/maps?ll=48.2934180,14.268333&spn=0.01,0.01&t=k&q=48.2934180,14.268333 [1]], 344m ASL, Station Code AT_LINZ_#) is mounted on top of a 3,5m pole on the balcony of the observatory building, to avoid shading by the dome as much as possible. To connect the Lightmeter with the PC, a ~7m extension of the USB cable is necessary. As no permanent Internet connection is available in the observatory, the data is uploaded manually to the GAVO data center. Also, the clock is set manually from time to time.
+Station Code AT_Linz, Sensor Mk 2.2, S/N L3
 The distance to the city center of Linz is ~1.9 km, to the city center of Leonding ~2.1 km, and to the industrial plants ~5 km (~4.5 km to the Chemiepark, ~5.5 km to the VOEST steel plant).

@@ Line 55: / Line 55: @@
 === Light metering network of the state government ===
-Since July 21, 2014, the Station L003 of the light metering network of the state government of Upper Austria is also located at the Kepler Observatory. This station runs independent from the Lightmeter.
+[[File:AT LINZ and L003.jpg|thumb|right|AT LINZ and L003.jpg|Lightmeter AT_LINZ (top) and L003 (below)]] Since July 21, 2014, the Station L003 of the light metering network of the state government of Upper Austria is also located at the Kepler Observatory. This station runs independent from the Lightmeter.
 --[[User:HerbertRaab|HerbertRaab]] ([[User talk:HerbertRaab|talk]]) 20:17, 3 August 2014 (CEST)
@@ Line 82: / Line 82: @@
 File:L3 Linz Helligkeit Oktober.png|October 2009
 </gallery>

@@ Line 1: / Line 1: @@
-[[File:Luxmeter Kepler-Sternwarte 1.jpg|thumb|right]]
+[[File:Luxmeter Kepler-Sternwarte 1.jpg|thumb|right]] [[File:Luxmeter Kepler-Sternwarte 2.jpg|thumb|right]]
 [[File:Luxmeter Kepler-Sternwarte 2.jpg|thumb|right]]
 === General Description ===
-The Lightmeter (Mark 2.2) at the Kepler-Observatory in Linz, Austria (48° 17' 36.3" North, 14° 16' 06.0" East [http://maps.google.de/maps?ll=48.2934180,14.268333&spn=0.01,0.01&t=k&q=48.2934180,14.268333 [1]], 344m ASL, Station Code AT_LINZ_#) is mounted on top of a 3,5m pole on the balcony of the observatory building, to avoid shading by the dome as much as possible. To connect the Lightmeter with the PC, a ~7m extension of the USB cable is necessary. As no permanent Internet connection is available in the observatory, the data is uploaded manually to the GAVO data center. Also, the clock is set manually from time to time.
+The Lightmeter (Mark 2.2, S/N L3) at the Kepler-Observatory in Linz, Austria (48° 17' 36.3" North, 14° 16' 06.0" East [http://maps.google.de/maps?ll=48.2934180,14.268333&spn=0.01,0.01&t=k&q=48.2934180,14.268333 [1]], 344m ASL, Station Code AT_LINZ_#) is mounted on top of a 3,5m pole on the balcony of the observatory building, to avoid shading by the dome as much as possible. To connect the Lightmeter with the PC, a ~7m extension of the USB cable is necessary. As no permanent Internet connection is available in the observatory, the data is uploaded manually to the GAVO data center. Also, the clock is set manually from time to time.
 The distance to the city center of Linz is ~1.9 km, to the city center of Leonding ~2.1 km, and to the industrial plants ~5 km (~4.5 km to the Chemiepark, ~5.5 km to the VOEST steel plant).
@@ Line 11: / Line 12: @@
 On 2014-06-29 the Windows PC running&nbsp;Jörg Weingrill's [http://hms.sternhell.at/lightwiki/Lightmeter-Driver%23Skysensor%20Software Skysensor-Software]&nbsp;has been replaced by a Laptop running the Lightmeter Software under Unbuntu (see below). The Station code has been changed from AT_LINZ_1 to AT_LINZ_2 on that occasion.
 === Preliminary Calibration ===
@@ Line 26: / Line 25: @@
 Results of final calibration (described in detail here: [[Calibration example Linz]]):
-<pre>
+<pre>   X = c ( b (a exp (n(1+dT)/a) - 1) + n )
-   X = c ( b (a exp (n(1+dT)/a) - 1) + n )
     n ... counts (sensor output)
@@ Line 53: / Line 51: @@
 The original sensor (Mark 2.2) is still in use. Also, data upload and clock check is still done manually&nbsp;at more or less <span class="hps">regular</span> <span class="hps">intervals, usually once in a month.</span>
---[[User:HerbertRaab|HerbertRaab]] ([[User talk:HerbertRaab|talk]]) 08:52, 1 July 2014 (CEST)<br/>&nbsp;
+--[[User:HerbertRaab|HerbertRaab]] ([[User talk:HerbertRaab|talk]]) 08:52, 1 July 2014 (CEST)
 === Light metering network of the state government ===
@@ Line 63: / Line 61: @@
 === Data on public lighting in Linz ===
-According to [http://www.linz.at/images/LL_196_12_13_MehrLicht.pdf this article] from Ausgust 2010, 20'624 luminaries with a total of 23'206 lamps are used for public lighting in Linz (189'311 inhabitants, as of Jaunuary 2010). The total power comsumption for the public lighting is 2.01 Megawatts. Not included in these figures is, of course, the public lighting of neighbouring municipalities. (Note that the Kepler observatory is located close to the western city limit of Linz, towards the city of Leonding [24.976 inhabitants]). --[[Benutzer:HerbertRaab|HerbertRaab]] 09:01, 3. Sep. 2010 (UTC)
+According to [http://www.linz.at/images/LL_196_12_13_MehrLicht.pdf this article] from Ausgust 2010, 20'624 luminaries with a total of 23'206 lamps are used for public lighting in Linz (189'311 inhabitants, as of Jaunuary 2010). The total power comsumption for the public lighting is 2.01 Megawatts. Not included in these figures is, of course, the public lighting of neighbouring municipalities. (Note that the Kepler observatory is located close to the western city limit of Linz, towards the city of Leonding [24.976 inhabitants]).
 === Results ===