Thursday, January 15, 2009

The MONS, as an experience: a retrospective

The MONS was one unique experience to me. It taught me a lot!
The telescope is exactly the classical German Equatorial type that allows you to do everything. You point it, you move it, you care for it, all this so that you can use it! It is the most part of the dream any amateur who started with modestly frugal equipment has. However, there was an unexpected taste in this experience.
On one hand, the MONS belongs to a professional observatory, on the other it is an "educational" telescope. Usually, people who go there do not know very well how to really care and take care. There are people who don't always know how to treat a telescope and sometimes people-injuring accidents happen. They have happened in the past. This leads the institute in-charge of the observatory to take preventive fool-proof measures, which somewhat limits what any visitor can do.
Though I have cared for the scope as if it were mine, I never actually felt it was my scope. And I think this ruled atmosphere was to blame.. Not being part of the staff, I am not allowed to try to collimate the telescope; I am also not allowed to hang extra-weight on the telescope.. These are two examples of perfectly understandable rules.. But..

The scope was carefully balanced if you left the cover on, which is not of a specific interest to the common observer. I still don't know if this is done on purpose or not. But no one, independent of it's knowledge, is allowed to do anything about it. Only the maintenance people can do certain things. Any engineer knows the math to estimate how much weight can be placed, and where, to balance the scope, but only maintenance personnel can touch it.
It's curious to note that a 1972 instrument that was almost neglected, on one hand, no longer is a state-of-the-art instrument -- so nobody seems to really want it; on the other hand, no one wants to let go of it.. Do this in a insular Spanish observatory, isolated by Atlantic waters, with a strict organization, and you get the MONS.
The MONS telescope is like this historical caliper with exchangeable tips. You can use the caliper and move it around, but if you want to change tips, you need to call the experts, who work on their own timetable. The caliper is not the most modern one, so it is not considered prioritary for current science, however, no one wants to let go its historical value.

So, an observatory does not seem to me like the dream location that would replace your own telescope. It is a place like any other where you find an unrelated interaction between people of different abilities and people playing different roles. I learned that going to an observatory to "play" with the telescope, is not the same as going to your father's tooling shop to "play" with the lathe machine, mostly because you lack your father as the authority. But it ends up being a work place where each person has its own undocumented value in the cumulative process.
I lacked the knowledge to adequately process the data I was acquiring. I also did not know how to look at our data and check if it was looking good. However, there were people who were supposed to know this, but which did not know how to "use" such an un-automated telescope. Definitively, there is more than enough room for amateurs to cooperate with professional researchers.

However, it was far from being a disappointing experience! Despite the six-and-a-half consecutive nights with bad weather, it was the best vacation I ever had, and I would gladly repeat such endeavor!


The people and policies behind the MONS observatory are only doing what they know how to do. That is the way the equipment is maintained. That is the way safety is kept. That is the way science is made. The MONS is not a playground for scientific astronomy, as the amateur may dream.. The MONS is the science's door that allows almost anyone with a science project to go there and make their science! All the joy that is lived there is a pure extra!

Day #30 (2009/01/13) Back to Lisbon


We woke up around 9:20 and left one hour and-a-half later. We said goodbye to people at the residency and drove down to La Laguna to find something to eat before going to the airport.
Now, while writing this on the flight from Tenerife to Barcelona, I wonder how will Rémi get along for the next month?
Rémi is a French student, with his university and supervisor in Canada. He came from music's "do, re, mi" before deciding to make his PhD in astrophysics :) -- Not everything is impossible! He has already been in an observatory in Chile, yet from my interaction with him, I believe he has had no physical personal telescope and did not yet know very well how to point such a telescope by hand up to now. Also he very little experience in looking through an eyepiece and matching what is visible with a chart, and in astronomy's visual observation, "seeing" faint stars is not just "looking" at them...
We only had time to practice all this for two targets, and on the first one (WR140) I did not allow him much practice as it was important to get the spectra. So with such short practice time, how will Rémi get along?

Day #29 (2009/01/12) The last day

This is our (team #3) last day here.
During the day we finalized the pending issues inside the dome. We made sure the telescope could be pointed towards the East, so that in February the next teams will be able to point at WR140 early in the morning.
During the night, we taught Rémi the complete process of using the telescope: from starting with a target, getting its coordinates, calculating the local coordinates to move the mount, how to read and set the Declination and Hour Angle circles for pointing the telescope, how to use the finder, how to make callibration exposures, how to operate the dome, how to upload data to the ftp servers, etc.

While still in daytime, humidity had dropped amazingly from 100% to below 30%, in around one hour.
At night, we managed to point and measure WR140. For the first time, I saw in a single spectrum taken at MONS the expected excess emission due to stelar winds colliding; and this was visible on a mere line profile over the image, really before any processing of the spectra. At around 20:00~21:00 of the 12th of January of 2009, we are very close to periastron, now is the time when the winds of the WR and O stars are really colliding heavily!
After WR140, clouds rolled in and did not allow much observation afterward. Members of team 3 when to bed, saying goodbye to Rémi, and Rémi remained up waiting for better weather...

Sunday, January 11, 2009

Day #28 (2009/01/11) Rémi arrived!

Around 17:00, Rémi arrived. We showed him the house, and the observatory and had dinner together. Tomorrow will be the day when we teach him how to drive the telescope.
But meanwhile, we noticed a problem in the telescope mount, that did not loosen the Right-Ascension axis as it should. If this is not fixed soon, it severely affects pointing the telescope. The mechanic will go there tomorrow morning to take a look at it.
My 28th day at the observatory marks what was supposed to be the last day here under our "lead". But with Rémi having arrived late due to canceled flights, tomorrow will still be a learning day for him. But tomorrow will be the last complete day of team #3 in Tenerife. Tuesday, team #3 will leave Rémi alone at the observatory, and take the plane back to Portugal.