# Survey depth with year?

**URL:** <https://www.rubin.community/t/survey-depth-with-year/9936>\
**Category:** Survey Strategy\
**Created:** [March 26, 2025, 12:56am UTC](https://www.rubin.community/t/survey-depth-with-year/9936 "2025-03-26T00:56:48Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![bryanwmiller](https://avatars.discourse-cdn.com/v4/letter/b/a9a28c/32.png) [@bryanwmiller](https://www.rubin.community/u/bryanwmiller)\
**Post date:** [March 26, 2025, 12:56am UTC](https://www.rubin.community/t/survey-depth-with-year/9936/1 "2025-03-26T00:56:48Z")

</div>

Hi. I’m looking to get the typical WFD survey depths in different filters with each data release in and out of the rolling bands. Typical values would be useful, a way to query by position would be a bonus. Is there a table somewhere or does this require maf? In the cadence notebooks I’ve seen reference to baselines like ‘baseline\_v4.3.1\_10yrs’. Do these have intermediate results for each year. Thanks.

---

<div class="post-metadata">

**Author:** ![yoachim](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/yoachim/32/74_2.png) [@yoachim](https://www.rubin.community/u/yoachim)\
**Post date:** [March 26, 2025, 4:41pm UTC](https://www.rubin.community/t/survey-depth-with-year/9936/2 "2025-03-26T16:41:05Z")

</div>

Hi Bryan,  
The database files like `baseline_v4.3.1_10yrs.db` have full simulated 10-year pointing histories, so it takes some work to convert that to what coadded depths end up as on different points on the sky. Here’s a quick notebook of how I would do it: [25\_scratch/depth\_at\_time/vector\_depth.ipynb at main · yoachim/25\_scratch · GitHub](https://github.com/yoachim/25_scratch/blob/main/depth_at_time/vector_depth.ipynb)

The highlights:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/rubin/original/2X/0/06a5c11a5f4270bffcb953a96cc6625f2259af27.png)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/rubin/original/2X/0/0f7e178b60f1cf4330aa2bd9f65cdae9472ee855.png)

---

<div class="post-metadata">

**Author:** ![bryanwmiller](https://avatars.discourse-cdn.com/v4/letter/b/a9a28c/32.png) [@bryanwmiller](https://www.rubin.community/u/bryanwmiller)\
**Post date:** [March 26, 2025, 4:59pm UTC](https://www.rubin.community/t/survey-depth-with-year/9936/3 "2025-03-26T16:59:14Z")

</div>

This is great. Thanks!