The Watertown Police Foundation is asking residents to submit photos for a 2014 calendar based on images from the dramatic April 19 manhunt that culminated in the capture of alleged Boston Marathon bomber Dzhokhar Tsarnaev. The deadline to submit photos is Sept. 30, with images being accepted online at www.watertownpolicefoundation.org . The calendars will sell for about $10, and will be available through the foundation’s website for delivery by Dec. 20, officials said. The project’s expenses are being funded by the Watertown Savings Bank, allowing 100 percent of the proceeds from the calendars to go to the foundation, officials said. In the days that followed Tsarnaev’s arrest, the Watertown Police Foundation was formed to help funnel donations and the proceeds from sales of “Watertown Strong” shirts to programs that will help the department and the local community. The foundation had raised about $100,000, and sold about 5,000 T-shirts as of early this month, officials said. The funds have been earmarked for projects with organizations like the Watertown Boys & Girls Club and the middle school’s chorus, as well as for new flags for the Police Department’s honor guard, according to a statement from the foundation.