Watching the night sky

Source A: an original contemporary non-fiction-style account.

The observatory evening began with a weather warning: if the cloud remained, we would see no stars through the telescope. We had paid for a guided session, and the booking message had made that possibility clear. Inside, an astronomer showed us a projected map of the sky and explained which objects might be visible. Twenty visitors sat on folding chairs. A volunteer adjusted the lighting so our eyes could gradually become accustomed to the dark before we went onto the viewing terrace.

When a gap opened in the cloud, staff directed the telescope towards it. We took turns at the eyepiece while the astronomer explained what we were seeing. I would have mistaken a faint cluster for a mark on the lens without that guidance. My daughter asked a question about distance, and the answer included a diagram on a tablet. We were not expected to locate objects for ourselves. The equipment, preparation and interpretation were supplied; our main duties were to wait, look carefully and avoid bumping the tripod.

The clouds returned before we had seen everything on the list. Nobody could change that, even with a room full of instruments. We went indoors to examine recorded images and ask more questions. I left with a clearer understanding but only a few minutes of direct viewing. The evening had made astronomy accessible without making the sky obedient. It also showed me how much expertise stood between my brief glimpse and my ability to name what had appeared in it.

Source B: an original letter in a nineteenth-century voice. This is a period-voice simulation, not an archival document.

Dear Edward, I have placed the small telescope beside the upper window, where the roof of the warehouse obstructs the least portion of the sky. It is an instrument lent by our neighbour, who has allowed me its use until the end of the month. I have no teacher at hand, but borrowed a star chart from the circulating library and copied several notes before returning it. Each clear evening I compare the drawing with what I can find above the chimney pots, not always with success.

The window must remain open, and the cold makes a lengthy observation less agreeable than the books suggest. Last night a cart stood beneath the street lamp, and the light reflected from its pale load prevented me from seeing a faint object I thought I had found. I waited until it moved. There is no appointed hour or company to take turns with me. If clouds gather, I leave the instrument in place and return later, provided the household has no other use for the room.

I have begun a notebook of positions and questions, though the questions are more numerous. When I next see the owner of the telescope, I hope he can explain why an object I marked on Tuesday seemed absent on Thursday. Perhaps I have recorded it poorly. The slow business of finding my own way has pleasures, but I would welcome an informed voice beside me. Until then I must distinguish an observation from a guess as carefully as the darkness allows, and resist giving a confident name to every uncertain light.

Use details from both sources to summarise what you understand about the differences in the support and arrangements available to the writers when observing the night sky.